The nostalgia in me wants Jagr back, but the everything else says stay away. Jagr is a cancer and would butt heads with Therrien very quickly. He would be a detriment on the growth of guys like, well, all of them: Crosby, Malkin, Staal, Fleury, Whitney, etc. Jagr would be exactly what you DON'T want your young guys to model. Getting a guy like Gary Roberts was a PERFECT role model for them that has already paid off in the way these young guys take their new-found training seriously.
However, it would be funny as hell if Jagr was back on the Pens and maybe if the spotlight WASN'T on him for once, he'd perform well? He would be damn sick on either Malkin or Sid's line and on the PP.
I'm still hoping for Hossa, and if not him, I guess we settle for Naslund, Huselius or even Demitra or Satan.
Hey, what about Sergei Fedorov for 3 years on the Pens?
Trade Staal and the 3rd rounder from the Malone thing for Rick Nash if all else fails.