My Roberts white spider, all XC Pro (except cranks):
My Pace RC100 - XC pro in parts...
I also have suntour on my Klein Attitude and my Off Road Proflex but no where near a groupset. I've never really liked shimano, all my bikes including modern ones are Campa, Suntour or boutique parts like proshift.
On a more serious note, I hope lots of Mavic equipped bikes fill this thread - Mavic is the one build I've not done yet and is definitely a scratch I need to itch within the next couple of years.
Closest I've got to it is rims and headsets - and even they're on separate builds...!