I like drummers who have a bit of spark in their playing. I've been fortunate enough as many of you have, to play with some excellent drummers over the years, and i seem to know in the first couple of minutes whether we are going to be a great rhythm section, or just a good one. I currently play with thwo regular drummers, one of whcih plays it 100% by the book, no flash at all, which makes for solidity (is that a real word??) and a great grounding for the guitarists etc, but the other drummers does the same, except with a glint in his eye and knows when just a little hit of the splash cymbal, or a small deviation from the songs standard beat etc would work, to which i'm able to pick up on and follow.