First off, thanks to everyone for the fantastic input. You've all given me a number of great ideas, which will be good for shaking up my current routine.
My arm workouts recently have been pretty standard- 5 exercises of 3 sets with 10-12 reps. I guess I've been trying to move towards more weight/less reps lately and have been frustrated the lack of apparent results. I'm going to incorporate some of these ideas into my workouts for the next month and see how it works. In particular, I like the idea of trying to get up to 200-250 reps. I'm interested to see how that goes.
Wideguy- thanks for the time and thoughtful answer. Unfortunately, I don't have any numbers for you for the deadlift. I think the last time I squatted I got up to about 170. I weigh 180, bench 200, and I'm 5'9". I do about 160-200 g. of protein a day.
For triceps, I do rope pulldowns, reverse rope pulldowns, french presses, sometimes dips, and always skull crushers. I found a GREAT skull crusher exercise last year- if I'm doing 12 reps (on the ball) I bring the first four down to my ears, the next four down to my nose, and the final four down to my chin. The burn is much different as you can feel it run up and down the entire tricep. That's the only exercise where I feel I'm really getting any results.
Any thoughts on how I can tweak that?
Thanks again to everyone for your time and help!