Also, this will sound a bit silly, but I think that really paying attention the
drums in your favourite songs will help your playing.
When you're driving, instead of wanking about playing air-guitar at the lights.... 'play' the drums.
If you can keep yourself in time with the drums without a guitar it's that much easier to do it
with a guitar.
I can't play the drums because I
hate them... but I'll bash away at my desk or steering wheel and keep good time.
I've found that my playing has become more and more solid since I've started doing this frequently.
If I had the time and space, I'd set up a drum kit to muck about on.
If you think about it, drums are the core of pretty much any music you'll ever play.... the comfortable you are with them, the comfortable you'll be when you're playing
with them.
