I dunno if many on here are up for this or if it's been done before but this is something quite fun and easy that I came cross on a Celtic forum (of all places!) quite a while back. It gives an insight into just how eclectic peoples tastes in music really are, especially if like me you tend to like 'songs' rather than artists.
Basically you go to your I-pod, MP3 player, Windows media or whatever stick it on shuffle, take note of the first 5 songs and artists you come across on shuffle and post them (and please resist the urge to lieif a guilty pleasure like Jedward comes up!).
I've just done it and I got:
In the ghetto - Elvis
Little Lion Man - Mumford and Sons
Somebody to love - Queen
Call me maybe - Carly Rae Jepsen
Guns of Brixton - The Clash
Pretty random bunch of songs that aren't really similar at all but hey I guess that's what this whole thing is about!