I've got a humorous video, a soft and sad one, and a harsher and more energetic one, so no matter what mood you happen to be in, I'm sure you'll enjoy at least one of them. (Note: the description for the last of the 3 contains spoilers for Farscape's 4th season, so proceed with caution if you haven't watched that far.)
Here they are, in the order in which they were made:
The funny one: Still Alive
In this video, set to the awesome end-credits song of the even more awesome video game Portal, SCoRPIUS reports on his surprisingly nonfatal career as the head of the Aperture Science Gammak Project.
And, of course, he feels the need to rub in the fact that he's always still alive.
The soft, sad one: Leaves from the Vine
The harsh, energetic one: Strawberry Gashes
I hope you enjoy the music videos! I'd love to know which one you liked most, so please take a moment to tell me in the comments section.