Luckily you only asked about lenses, not bodies... :P
Wow, some large lens collections around here! I read someone have 18 different 50mm! That's like a photo store!
I have collected only 10 lenses in less than 5 years, but my wife does not agree with "only"...
5 of them with aperture ring, so that I can use with my ME and my electronically failed K-x.
I still want a few more to fulfill all the range span, as well as trying something different. Anyone there willing to sell me a nice & old 28mm? Or a 43mm 1.9?