There's a construction company in Chicago that has a pretty progressive way of dealing with vacation time. They've got a creative plan set in motion that gives their workers a few different options when it comes to time off.
If you work there you can just take the normal ammount of vacation you regulartly have, you can sell some vacation back to your employer or buy more with paycheck deductions. If you think that's generous, get a load of this: You can even donate vacation time to another coworker that may need the help. Sounds like it offers a lot of flexibility for time off. Would you pay for more vacation?