I have:

Black Hammer: Apr. '83
Blue Hammer: Dec. '88
Burgundy Hammer: Oct. '92
Ninja RPM: May '94
Cuda/C : Feb. '95

I never realized just how old these balls were. All of these balls still hook wonderfully. However the Black Hammer, which flares quite a bit......hits kind of tinney, if that is a word. It almost sounds metallic when it hits the pins! What can you expect from a thirty year old ball, I guess?

InSite Almighty -  still use it regularly

Beast
Ti Beast
Mass Chaos
Trauma Response
Hex

All waiting proper burial.

Never really thought about this one too much but here's my list:

Ebonite Rainbow polyester. (red, yellow, green, orange, and purple striped)
Morich Awesome Finish
Hammer No Mercy Beatn'
Storm T-Road Pearl
Storm Gravity Shift

This is basically my retired ball list.

Our center has three Brunswick Mineralite balls from 1946 when the place opened.

Did you know these balls were balanced dynamically by placing them in liquid mercury and letting them float and spin and then marked by hand?

OSHA would have loved the old bowling days ...

Well let's see, I have:
 
Ebonite Clear Wolf Spare Ball - late 80's (still my spare ball today)
Ebonite Clear Wolf - NIB (for when the one above cracks in half, lol)

Loved throwing that ball during the late 90's - was my spare ball but there would be some nights where the lanes were so bad that I would throw it as my primary ball.  Would love to find another on. 

How about 4!

Roto Grip Cell
Hammer Black Widow
Storm X Factor
Storm X Factor Brand New SIB

I currently have a
U2 Pearl
BUD II
Turbo X
Zone Pro Deep Violet
El Nino 2000