I'm not trying to stir the pot here, but even though I'm 24... I really don't want to work with overly-ambitious FOB kids, or older crotchety folks either. I think age may be a discriminant for some companies, but I'd rather not work at those places regardless in all honesty.
I enjoy working around down to earth, communicative, bright individuals regardless of age... that keep work/home separate but can also grab a brew after the work's done. Luckily I hate managing so that'll never be my problem. 😛