How about this for a lens line-up. I'm a consumer/home/hobby shooter. Kids indoor and outdoor activities, family, and personal stuff. I find I'm big into flowers and wildlife right now. Also, sometimes we travel, so I need a good general purpose travel lens.
Right now I have:
I have the opportunity to sell the 18-55IS with my XTi body (getting the T1i), so I'm thinking of moving to:
* Nikon 75-150/35 w/EOS adapter
And maybe add an UWA later.
That gets me natural light indoor primes, and also fast primes for sports and events. An 18-200 travel and general purpose lens, and the Nikon for movie mode for my kids dance recitals, etc. (manual ap and focus, reasonably bright lens -- some DSLR movie folks I talked to really recommended this lens).