The latest set released on graphicxtras is a set of H themed patterns for use in Photoshop CS5 CS4 CS3 CS2 CS1 7 6 and Photoshop Elements 10 9 8 7 6 5 4 3 2 1 (all versions of Adobe Creative Suite) and others. PC and MAC. The set includes the H designs in standard PAT (Photoshop patterns format) and PNG (for other applications) as well as bonus eps H vector shapes designs. The designs are easy to use and load into Photoshop etc, they can be re-colored, modified, distorted, exported, used to define brushes, combined etc
The set includes many different styles of H from thin H designs, rounded H designs, mottled H patterns, shadow H pattern designs and many more.
http://www.shareit.com/cart.html?cart=1&productid=300506273&cookies=1 to buy the set (the item is for license commercial use, you can use the patterns to create a vast range of different designs such as t-shirts, books, fabrics, backgrounds, etc)
Below, some examples of the H letter patterns applied as a new fill layer in Photoshop. The patterns are 1000 x 1000 seamless tiles, the designs below are 620 x 800 etc and are not seamless designs. In some cases, multiple patterns have been applied as well to create more complex pattern designs based on the H design
The H designs are applied in a variety of different ways and color schemes. You can, once the design has been applied, re-color the design - so the design below, in blue, can also be quickly converted to a red design or green design. You can also, once created, apply various effects to the H pattern design. The patterns are applied, in most cases, as a single layer but you can also apply them in multiple ways to create variants of the designs (using blending modes or opacity). The layer fills the entire document but it can be forced by using a Photoshop selection to be applied just to a small defined shape filled with a color pattern.
The pattern sets all contain the designs in PAT format and the PAT format is for Photoshop and Photoshop Elements (I believe it is unique to those applications though it is always possible that other applications can support them) and PNG. The reason for the PNG format files - that format is supported by lots of applications such as PaintShop Pro etc - so the design below can also be used in that application as well. To load the PNG files into PSP and others might vary - you need to find the location for the files etc or perhaps there is some way of importing the files within the application.
The graphicxtras set of patterns also include the source eps files as well (the designs were all created by CSH shapes files but before that they were stored in a VFB font file .. and was used to export the source designs as EPS format files). You can then use the H pattern designs to create a vast range of different patterns based on the H letters.

The H designs are seamless tiles - the examples here are not as they are the patterns applied to a layer in Photoshop using the new fill layer command. You can do the same in Photoshop Elements etc. The one thing I like about the new fill layer command.. it has a scale feature so you can set the scale of the pattern to 25% or 125% etc. It is a pity that the fill layer command does not have a feature to rotate the pattern as well (this can be done but it is not part of the control). Also, the blending mode and transparency has to be either applied before and after and not while the fill layer command patterns are being selected (would have made the control a little more bulky but it would have added a lot more functionality, useful functionality to the dialog)
You can also use, though I haven't used the pattern stamp etc in these examples, tools such as the pattern stamp and the fill command and the layer style dialog (pattern overlay) etc. You can also use the results of the letter patterns as a source for other preset tools such as a brush stroke. You can also use the path tools and the pattern to create custom shapes for the H letter patterns or use the H letter pattern as a source for displacement effects / distortions etc in Photoshop and Photoshop Elements
As mentioned, the color schemes can be quickly changed. You don't have to keep the garish green below - it can be modified quickly via the hue commands. You can also turn the entire design into a B&W via the various B&W features of Photoshop
The designs can also be exported to 3D applications so the H letter pattern designs can be used as a source for 3D models (in particular in Photoshop Extended but as easily in Carrara and 3D Studio Max). The PNG files also can be used in many applications but in some cases you may have to use a conversion tool (batch tool) to convert the PNG files into TIFFs or JPGs as PNG is supported in many apps, it is not supported in all (Painter comes to mind, though that might now be fixed - also the PNG format might vary and some apps say they support PNG but cannot read the files for some weird reason)
The H letter patterns can be applied as a new fill layer, fill command, layer style > pattern overlay; layer style > bevel texture; pattern stamp brush and also the brush texture palette.