As DM, I've found that just photocopying/printing out PHB p.277, PHB p.289, and DMG p.42 (with errata) fit most of my needs (although I've got PHB p.289 mostly memorized by now).
However, this crib sheet is also quite good:
http://www.enworld.org/forum/4e-fan...228749-d-d-4th-edition-combat-crib-sheet.html
-- 77IM
However, this crib sheet is also quite good:
http://www.enworld.org/forum/4e-fan...228749-d-d-4th-edition-combat-crib-sheet.html
-- 77IM
