Here's a nice little profile of longtime voice of the ballpark, PA Announcer for the Phillies and Eagles, Dan Baker. He's held that title for the Phillies since way back in 1972 and for the Birds since 1985. The YouTube description says the video originally aired on the Charlie Manuel show and was produced by Michael Licisyn.
If you're an out of towner and haven't been to a game in South Philadelphia in a while, this'll be a nice little reminder of home. [video below]