Foley's become a caricature of himself since returning to the 'Hawks in 2009.
During Dollar Bill's last stand around 2005-06, he gave the heave-ho to a lot of front office talent. The Chicago Wolves snapped him up to call the games for them (as the Wolves have long been the home of Dollar Bill cast-offs (Wayne Messmer, Billy Gardner, etc)). He called the Wolves for two years and by the 2008 Calder Cup Championship, Foley had a Ken Kal type enthusiasm when goaltenders would make a save.
"a big save by Pavelec" would get smeared into "BHHIIIIIIGGGGGGHHHSSSHHHHAAAAVVVEEE by PAAHHHHVVVVLLLEEEKKKKK." (Fans seriously thought he was going to have a stroke on air. Or had one already.)
After calling the Wolves 2008 Calder Cup win, Foley was then hired back by the Blackhawks after Rocky started extending the olive branch to some of the recent cast-offs.
And since he's been paired with Eddie Olczyk, he's become, like I said, a caricature of himself. Over exaggerated play calling. The beating of dead jokes (I swear if I hear tree-turdy-tree-anna-turd or similar again, it will be too soon).
I understand chemistry between PxP and Color guys are needed, absolutely, but it seems like Olczyk just brings the common denominator down to "licking lead paint products" levels.
I do have to say, my favorite pun/gag from Foley was this pre-game exchange during a Wolves road game in Philly:
https://www.youtube.com/watch?v=jMP4tiXD4vU