When I add a new CD to the collection, I'll often listen to it over and over until I'm almost sick of it. (Currently Tegan and Sara, So Jealous.) 3, 4, 7 repetitions a day and I don't even blink an eye. It's one of those OCD quirks that many of us have, so I don't think it's particularly weird, just mildly annoying to those around us who aren't as keen on the object of obsession.
This same tendency has crossed over into my sewing since I've returned home. I have a million projects in the queue but I can't stop making zippered pouches. I'm sure the impending "I don't want to LOOK at another pouch" will come, but I'm not there yet. They're all unlined, not big enough to be purses or wristlets or anything, just random pouches for random stuff. I think they'll work well as thank you gifts but I’m so deep in the obsession that I can’t tell anymore.