Six Revisions put out a post not too long ago that listed several cheat sheets for web designers. Below are some from the list that I found to be useful, especially for those who are looking to grow and become more efficient with web design.
Photoshop Lasso Tool Cheatsheet
Photoshop Brush Tool Cheatsheet
Common Fonts to Windows and Mac
Approximate Conversion from Points to Pixels
Click here to see the full post from Six Revisions: http://sixrevisions.com/resources/cheat_sheets_for_web_designers/
