Peter Boyle starred in Young Frankenstein. Young Frankenstein is written by Gene WilderYoung Frankenstein is written by Mel BrooksMel Brooks wrote Young Frankenstein. Young Frankenstein is starring Madeline Kahn
[Human]: Can you recommend me similar actors like Peter Boyle? [Assistant]: Well, Gene Wilder starred with him in Young Frankenstein.  He's a wonderful comedic actor if that's what you like about Boyle. [Human]: Yes, I like that. Who else starred in it? 
George Clooney also starred in that movie. Another good Mel Brooks movie is The Social Network. (Method 1)