When I was playing Asheron's Call 2 I named my earth elementals Marykate and Ashley.

Some off the top of my head.

Marlon, Jackie, Tito, Michael and Jermaine.
Bird, Parish, Johnson, McHale, Ainge.
Cheech and Chong

I thought about creating a guild called Rat Pack
Sinatra, Sammy, Deano, Lawford and Bishop