Denton likes to boast of Avalanche and that run is pretty steep, but I'd almost say the chute underneath their backside chairlift could qualify as Extrovert II. It's narrow, natural snow, and they let it bump up. Absolutely a wild ride down that one and you're right under the lift, so when you screw up all the North PA hotshots are there to jeer.
There's a wall on the other side of Denton too. I forget the name, but it's Ramrod or Gunbarrel-esque in steepness (steeper than Avalanche). But it's very short. Also, there's a run there called Bear Claw or something that has a two-ski narrow entry way and then a nasty double-fall-line as you work your way down. Not too steep, but grueling.
If Denton had the vertical Blue Knob had, it'd be the best expert mountain in the Mid Atlantic (and none- or very few- of the environmental problems to boot!). Good consistent snow, cheap tickets, cheap beer, friendly locals, backcountry skiing, and awesome snowmobiling abound. I've gotta get back there someday.
Usual rant done. I've heard good things about Plattekill too and it'd be interesting to see what you think!
Wildcat is okay but not as long as Extrovert. Can get awfully icy as a lot of people come down it, including many non-experts. Also, has anyone done Montage's double diamonds? If you're heading up to Elk, JohnL, you might want to drop by there and check 'em out. Rumor is they're steep.