Oh yeah. The museum I work at is open 7 days a week, 362 days a year. So I'm pulling a Friday, Saturday or Sunday nearly every week. I say nearly, because at the moment I find myself with a three day weekend. Unfortunately, the missus is out of town at a conference so I will probably spend this time installing gutters and steam cleaning the carpet (two dogs).
Not complaining mind you, it's a great job. I'm doing the work I want, and I can request my days off if I want. Also, it's a state job so the benifits are wicked!.