And though we should take the time to appreciate Quantum Leap more often than every four years, we are honoring the beloved science fiction series here today. So, without much further ado, we present Quantum Leap’s best episodes.

But not before we rock out to the opening theme.

“The Color of Truth” – Season One, Episode Six

The show dealt with issues of race many times, but the first season’s “The Color of Truth” was the first time the subject was tackled. Sam leaps into the body of a black man who is the chaffeur to an old, racist widow. His purpose for being there is to save her from dying in an accident. He succeeds but his act of valor also causes the woman (with important political ties) to reassess her views about racial segregation.

“Jimmy” – Season Two, Episode Eight

Jimmy LaMotta is a character beloved by fans of the series. The developmentally-disabled adult appeared again in two season five episodes. However, we’re first introduced to Jimmy when Sam leaps into his body to prove to Michael Madsen that he’s competent enough to keep his job at the docks so that he doesn’t spend the rest of his days in an institution.

As I’m sure you’re already aware, Kaitlin Olson is best known for playing Sweet Dee on It’s Always Sunny in Philadelphia. She has to put up with the gang hating on her every week, but in real life she’s married to Mac. The revenge sex must be CRAZY.

A word from Kaitlin: “I didn’t want to just be cute and on TV. I wanted to be funny.”

And you’ve succeeded on all fronts, Kaitlin. It’s girls like you that make me wish girls like you existed in my social circle.

Check out some more cute, funny, hot pics of Kaitlin after the jump.