Another group. This is my second highest group, currently level 70.

Blood dk tank
Ele shaman
Destro lock
Bm hunter
Holy priest

Nice things about this group:
Decent tank for boxing. Takes some big hits sometimes but the holy priest can handle it.
Wipe recovery from shaman
Two classes capable of healing and rezzing
Best healer in the game

Bad things about this comp:
My shaman does poor dps. Maybe i need to switch him to enhancement?
Earth elemental is nice for oshit moments
Cant use leather drops

This group is fun too but the lvl 71 group is more 'easy mode' than this one.