Here's a list of top franchises for 2007:
2. Dunkin' Donuts
3. Jackson Hewitt Tax Service
4. 7-Eleven Inc.
5. UPS Store, The/Mail Boxes Etc.
6. Domino's Pizza LLC
7. Jiffy Lube Int'l. Inc.
8. Sonic Drive In Restaurants
10. Papa John's Int'l. Inc.
Source: Top Franchise Opportunities
Running a franchise is a lot of work. Be prepared to work 10-12 hours everyday in the beginning. Depending on the location, usually one franchise isn't profitable; you would need a couple to see real profits.