I was thinking of a fun little event for my guildies and anyone else on the server who would be interested: WoW racing. Basically, the idea is that players race around a set course (that is, a course drawn up as an image and posted on the OP thread showing the course boundaries), in a capital city (ie, Dalaran). Players would race using their ground mounts, no speed buffs allowed, and the winner would get a little prize (500 gold). Sure, the player who cuts the corners the closest and stays on the inside track will win, but as I said; it's just for fun. (to make sure everyone travels at the same speed, all racers in the match would have the same riding skill for ground mounts; lvl 20-39 players, 30-59, and 60+).
The concept could even extend not only to racing around cities, but to zones as well, perhaps entire continents as cross country races (obviously though, such an endveour would require the racers to be high enough level to be able to safely traverse dangerous areas such as Deadwind Pass where mobs are located on the roads).