Via Deepti Hajela at the AP:
Briefly typecast in tough, irate roles, Boyle began to escape the image as
Robert Redford‘s campaign manager in "The Candidate" and left it behind entirely after "Young Frankenstein," Mel Brooks’ 1974 send-up of horror films. The latter movie’s defining moment came when Gene Wilder, as scientist Frederick Frankenstein, introduced his creation to an upscale audience. Boyle, decked out in tails, performed a song-and-dance routine to the Irving Berlin classic "Puttin’ On the Ritz."
It showed another side of Boyle, one that would be best exploited in the sitcom "Everybody Loves Raymond," in which he played curmudgeonly paterfamilias Frank Barone for 10 years.
"He’s just obnoxious in a nice way, just for laughs," Boyle said of the character in a 2001 interview. "It’s a very sweet experience having this (success) happen at a time when you basically go back over your life and see every mistake you ever made."
The "Puttin’ On the Ritz" clip is on YouTube here.