This Modern World, by Tom Tomorrow, has been collected into a "25 Years of" two volume set thanks to a Kickstarter.
I have been greatly enjoying it. I love social-commentary and political cartooning and think it should be required reading for all high school kids. Somehow, either as History, English or Civics (is that a class anymore?), a good survey of the most recent 30 or 40 years of political cartooning should be canon. Doonesbury and This Modern Life are tops on my list. Next up, the end of year anthologies from around the country.