I have a soft spot for Hans Bethe, theoretical physicist and Nobel prize-winner. He left Nazi Germany, came to the States, and was the head of the theoretical division in the Manhattan project. After helping to create nuclear bombs, he was so horrified by the consequences that he devoted the rest of his career to fighting nuclear proliferation, the arms race, and war in general. He also had a great "mad-scientist" hair-do; not as great as Einstein's, but pretty darn good.
And just for fun there's always Danish astronomer Tycho Brahe! I swear, they need to make a made-for-TV movie about the guy; the stories surrounding him are beyond bizarre. He lost his nose in a duel over a math proof! He kept an elk (or moose or reindeer, depending on whom you ask) as a pet, and it died when it fell down the stairs after he fed it...vodka, maybe? He hired a little person, whom he believed to be clairvoyant, to live at his house and sit under the table. And legend has it that he died when he refused to excuse himself during an important dinner, and his bladder exploded. (I'm not even sure if it's possible for a bladder to explode, but it just adds to the weirdness surrounding the man). They also found traces of mercury in his body, so there are also rumors that someone poisoned him. He was loathed by the people who worked with and for him. On his deathbed, he made his student, Johannes Keppler, promise that he would dedicate his life to disproving Copernicus. Keppler agreed, and then actually dedicated his life to verifying that Copernicus was right.
And there you have the grand total of what I remember from college astronomy!