Wow, I just found a fabulous new way to waste time at work! (like I really needed another one, eh?) It's a free online metronome. Just set it to 120bpm and play speed metal sextuplets with your feet to really drive the guy in the next cube crazy. Actually I like to tap my foot to it, turn the sound down, wait a bit, then bring the volume up again to see if I've drifted. I also tap tuplets against it. I like to try tapping my phone number as a string of tuplets... 737-4693 (that's not really my phone number, I actually have at least one quintuplet in my phone number). Anyway, handy thing. Here's a link.