Yeah the dynamic of a big group together is awesome. ALA pumping iron.(from my facebook stalking dridders has this, lucky bastard).
I hate gyms that have cardio equipment too near the weights that wrecks the feel(my current gym). Oh yeah Im pumped for my last set of squats seeing random mc no puff you go at 5 kmp/h on your pretendercise cross trainer.
Cardio training buddies are awesome but i like to separate the two. i.e ideally if i can get a cardio buddy whos fitter then me = profit a strength training buddy whos stronger then me profit. Its unlikely in todays world of slobs tho to get a combo of both of those in the one person.