Er, wait, that didn't come out right...
Ahem. Anyway, Sham's been posting some combat hacks for older versions of D&D and their simulacra he's calling "What Price Glory". These are short little houserules that can be added to make combat a bit more crunchy and detailed. They're definitely worth the time to peruse, even if you don't use most, or even all, of them, just for the inspiration.
What Price Glory: Part 1
What Price Glory: Part 2
What Price Glory: Part 3