Yup, very true, vga. But I use DP's list for my collecting =). The list I made is just for when I'm out buying (to make money to buy more videogames, of course).
The one item I want to add to my list is cover variations - for instance, the Collector's Boxes, and the titles that were released in both LB and non.
Thanks for the tip on V-Tennis, I was almost sure that I had that listed as Longbox, but I'll have to remark it.