I do have some books on my shelf. They are either ones I didn't get round to finishing yet, or ones I might want to read again.
To be fair, there was one book I regret getting rid of. It was The Man Who Mistook His Wife For a Hat by Will Self. I could easily read that again. I highly recommend it. But hopefully somebody else has had a chance to read it.
The comedy DVDs, though, I don't really regret getting rid of all those. I watched them all enough times, and there is new comedy I would rather watch. Even if just one other person got to enjoy them, that's worth me passing them on.