Good one. This is big. I went to a med school where the services were constantly at each others' throats and you had to beg, borrow or steal to get a consult, often making it an attending-to-attending thing which pisses everybody off.
My residency/fellowship program OTOH, while there are still the classic inter-service rivalries, consults that are called get done.
It makes taking care of your patients much easier when the Urology senior will come in from home at 3am to eval a pt w/ a clotted off 3-way foley or Gen Surg will basically see any undifferentiated abd pain, mostly w/o complaining.
as an intern, i had a patient with testicular torsion... urology came in 12 hours later! of course he ended up with an orchiectomy. and had urology come in quickly, it still could have ended up as an orchiectomy, but he didn't even get the chance to have his testicle saved! granted, the guy was in his 50s or 60s, but man to man, we should be trying to protect each others balls.
but there are lots of services that will have value to you as an intern and resident perhaps on a daily basis (or call at least), that you don't think about during the interview:
cardiology- willing to come in, or consult over the phone on only mi's... what about post cabg, post heart cath... mi in the hospital, pericardial effusions...
neurology- what if you can't get an lp? what if you actually have someone with stroke symptoms who came in "on time"- will they come to administer tpa?
gi- you've got an acute upper gi bleed from the er, or on the floor... can you expect a scope within a few hours, or will it be ng tube/blakemore tube and let me know in the am if he's still alive?
pulmonary/icu- will they come if you're worried about a patient who looks like he/she is about to crash (that copd patient who isn't tolerating bipap well), or do they actually want the patient to crash before being consulted?
sometimes the timely intervention for your patients, and ultimately decision making and decision points for your patients lies in the hands of the specialists. if your specialists are dragging their feet more often than not, your patient suffers, and you may be miserable. but if they do what they're supposed to do when they're supposed to do it, you'll be happy, and ultimately the patient benefits.