Six Flags is self-evident. But, these others might be quite interesting.
1. Twitter
2. Skype
3. Facebook
4. Lego
5. Amazon
6. Starbucks
7. 7-Eleven
8. Apple
9. Häagen-Dazs
10. Samsung
11. Ikea
12. Google
13. Panera Bread
14. Six Flags
15. Gap, Inc.
All the background @ The Hidden Meanings Behind 15 Company Names - Mental Floss - Pocket