Yeah I've been known to do too many preacher curls. I know when I have because the next day, I can't stretch my arms out all the way, or even close to all the way. It's painful. It takes a few days for that to go away too.
I just got a weight bench fer christmas (needed it since I'm no longer in HS and couldn't use those facilities). My regiment is this.
Run (currently trying to get back in shape)
Bench - triceps, pecs
Incline Bench - triceps, mostly pecs
Squat - all leg muscles, cept a few (if running didn't kill my legs)
Preacher Curls - biceps, forearms
Shrugs - trapezius (you can really feel it)
Back Rows - little bit of arms, back (deltoids)
Lat Pulls - latissimus dorsi (if I had the apparatus)
Until I get a few more things in there, that's how it'll be. BTW, I use only freeweights, with everything. I've tried both free weights and machines and the results I got from free weights were 20 fold better than that of machines.