Xperl
Bartender 3
Auctioneer (I freakin love this mod)
Cartographer
SimpleMinimap
Elekk Buff Bars
Quartz
Fubar + all other fubar ones
Outfitter
Carbonite
nQuestlog (because carbonite alone isn't that great for showing a list of tracked quests)

and many many more that I always have going.
I think last night I was upto about 90mb used for addons ... first load