Files here are all designed by me, Angille.
Preview Summary
Dungeons & Dragons 4e (v4) - I think I'm almost done. Still getting feedback from forums.
Page 2 is designed to be used with the cards below – 4-9 replace the cards and Page 2, allowing Page 3 to back up Page 1.
Dungeons & Dragons 4e Cards (v2) - Powers, Items, Rituals and Rules cards.
Until I reupload an imposed version, if you don't have InDesign, try Scribus to lay out multiples on a sheet.
Mutants & Masterminds 2nd Edition (v2) - Hey look, it's like a comic book rather than a form! Yay.
Colored sections match their chapters. Oh, and CC license too.
Tombs, Trains & Tesla - Victorian era M&M, with extra powers sheet
Star Wars Saga - House rule applied: Climb/Jump/Swim rolled into Athletics.
The Condition Track is designed to be used with a Post-it or a paperclip.
Star Wars Saga - As above, except landscape if that floats your boat.
Mike Mearls' Iron Heroes - Uses our house rule of Vitality/Wounds instead of IH's renewable Hit Points.
Easy enough to ignore the titles.
Monte Cook's Arcana Evolved - Too many house rules to enumerate here. Still easy enough to ignore.
Mutants & Masterminds 2nd Edition (v1) - This is still quite the usable sheet, with perhaps even more useful widgets and cogs than the new one. It's just not as pretty.
Dungeons & Dragons 4e Cards (v1) - Powers, Items, Rituals and Rules cards, in a similar style to WotC's.
Too similar, really. New version above.

Dungeons & Dragons 4e (v2) - As nice as it is, I made a better one. First sheet where I added a Creative Commons license.
Dungeons & Dragons 4e (v1) - Updated after release of the books! Third page is for crazy Epic people.
Update: After actually playing a few rounds, this one seems silly.
Dungeons & Dragons 3.5e - Heavily borrowed from Rossco's sheet.
Star Wars d20 Revised