One of the things I really don't like about World of Warcraft, or any other MMORPG, is the waiting that is involved in getting a group together. This can be a real problem in raid environments, where it often times can take half an hour or more just to get the group set. I've been a raid leader before, so I know that they are busy and there isn't much they can do about the time we all just sit there on vent chatting with each other.
One of things that I've recently came across to help ease the wait is a little in-game game of bricks, a.k.a. breakout. Breakout is the game that I used to play back in elementary and middle school on the old Macs* where you'd bounce a ball around, breaking (you guessed it) bricks. The ball is bounced off a small platform that you move with your mouse. Pretty simple, and mindlessly entertaining.
Lately I've been enjoying a version of this game called WoWonid, which is an Ace2 addon I found via my addon updating with the WoWAceUpdater. It's a good enough implementation of the game (and quite impressive when you consider that it's done in LUA and built using an interface that's designed for game addons). The controls are simple enough, and just like the old Mac controls: move the mouse left or right to move the platform, bounce the ball, pwn.