4th Gen: TurboGrafx-16, NeoGeo, Genesis, SNES
5th gen: Jaguar, Amiga CD, 3DO, Saturn, PS1, N64
6th gen: Dreamcast, PS2, Xbox, GC
This is how the industry sees the console generations. Frankly, I agree with it. Only console I didn't own were the 3Do, Jaguar, and Amiga CD.
EDIT: Oops, forgot the virtual boy and Apple pippin in the 5th generation! Just added them for laughs.
Good news Everyone!
I've invented a device which makes you read this in your head, in my voice!