Topuper and CM are both 100% correct. It is a very rewarding job, and it's one that when you walk out the door after your shift, you can leave there! No taking files home, worring about hitting target budgets etc....
Shift work can be an adjustment if you have never done it before. In the UK at NATS's Terminal Control Unit is 6 days (2 morning 2 afternoon and 2 night shifts) then 4 days off (well, a sleep day and then 3 days off!). The hours you work are regulated, and if you're the sort of person who wants to sit in a control tower and look at the planes, there is the possibility, or if a radar is more your thing then _LOADS_ of scope. This will depend upon which "path" you follow in the college, be it Approach or Area. And if you ask anybody, they will always say their function is better than the other!!!