There are a lot of Tom Lehrer bits on YouTube. He skewered pretty much everyone, from the Boy Scouts to the President, and a fair amount of his stuff has aged rather well.
Like a lot of comics in the 1960s and early 70s, he made his fame on comedy albums. They were popular because they allowed blue humor at a time when broadcast radio and TV could not allow cursing or any kind of even slightly dirty joke, and Lehrer told a lot of dirty jokes, though they were not overtly so -- nowhere near the likes of Lenny Bruce, for instance. Lehrer was a master of the double-entendre. (Comedy albums largely sold by word of mouth; someone would tell you one joke, and you'd go buy the album so you could hear the rest of the act. I can remember swiping our parents' comedy albums to play (quietly!) at slumber parties when I was a kid. ROTFL usually gave us away.)
If you like the Smothers Brothers, you'll probably like Tom Lehrer. (Personally I like Lehrer better, because I always lost patience with Tommy Smothers' schtick of pretending to be stupid. He was VERY far from it, and wrote most of their material.)
RIP, Tom. So sad to lose another legend of American comedy's Golden Age.