Derbi FDS 90cc
Honda CR250 supermotard
Yamaha TDR250
Cagiva River 600
Cagiva Mito 125
Honda NS400R

Nowadays: Yamaha XT660Z and the XTZ660, XJ6FA and RD350F2.

Honda QR50
Yamaha PW80
Yamaha DT80mx
Yamaha DT80lc
Suzuki RM80
Yamaha RD350lc
Suzuki RGV250
Honda CBR250
Honda CBR600
Honda CBR1000
Suzuki GSXR1000
Honda Transalp 600
Honda Varadero 1000
Yamaha XT660X
KTM 990SM
Gasgas 250SM
Sachs Madass 125
Honda VFR800 VTEC
Yamaha TZR125RR
Yamaha TTR250R
Yamaha XT660Z

Holy crap, that's the first time I listed them all. I may have a problem...

previouse bikes
 

1 Honda CB175
2 suzuki GT250A
3 Suzuki GT550B (2stroke triple)
4 Kawasaki Z650B2
5 Honda XL 250s

Present Yamaha XTZ 660 tenere

Ralleigh Runabout
BSA A7SS
Suzuki GT125
Kawasaki Z400F
Honda C50 + C90
Suzuki GN250
Yamaha XS650
Honda Transalp 600 (89)
Honda Transalp 600 (96)
Yamaha XT500
BMW F650GS
Suzuki DR350
Honda Transalp 600 (99)
Kawasaki Versys 650
BMW R1150GS (soon to go)
Yamaha XT660Z Tenere (current bike)

Honda NS125
Yamaha RXS100
FZR400
Bandit 600 - Written off
Bandit 600
Suzuki GSX750F
Yamaha xt660r (current)

Although I started at 16, which was a long time ago, I had a long layoff after I met my my wife and didn't return until my children were in their teens, so my list is rather short:

Puch M50 Sport
Kawasaki S1B 250
Kawasaki Z400
Kawasaki Z750
Kawasaki Z500
BMW R100S
=========
Triumph Sprint RS 955i
Aprilia SL1000 Falco
BMW K1200R sport (current)
Yamaha XT660R (current)

9 Honda
6 Suzuki
3 Kawasaki
1 Ktm
2 Yamaha

Easier to list them that way I guess.

Very fond memories of touring Brittany on an Rxs100.
A gang of us went and I had the largest cc bike!

Honda CB250N Wet Dream (hideous)
Yamaha DT125LC (stolen)
Honda MTX125R (sold)
Yamaha XT600 (stolen)
Yamaha BWs 125 (stolen, recovered, part ex'd)
Vespa GTS300 (returned)
Yamaha XT660z (returned)
Yamaha XT660z (poorly)

Old but not bold
 

Montessa Cota 247
Honda list- CB500/4, SL350, XL250 (1st model) multiple CB750/4s (ridden & parts bikes)
Ducati- GT750 '73 (silver/black) rode from Darwin to Sydney in 1978 @ 19
Triumph- T140V Bonnieville '74 (USA export)
Harley Davidson- XLCH '81, FLHTC '92
Kawasaki- KX250 '82
Suzuki- DR650 x 2 '94*
Yamaha- YZ400D, R5 x 2, RD350B, WR450F '04* , XT660Z '10 (current *)
Thought I'd had a bit of a go :icon_thumright: While they're still making bikes, I'll want one
Still on the wanted list- '76 Triumph T160 Trident (sunflower yellow over white)

Kwaka AE 50
BSA Bantam
DT 125 LC
KMX 200
TDR 250 , (best hooligan bike I've owned)

http://{\rtf1\ansi\ansicpg1252 {\fonttbl\f0\fnil\fcharset0 .HelveticaNeueInterface-Regular;} {\colortbl;\red255\green255\blue255;\red73\green72 \blue65;\red255\green255\blue255;} \deftab720 \pard\pardeftab720\sl440\partightenfactor0 \f0\fs32 \cf2 \cb3 \expnd0\expndtw0\kerning0 \outl0\strokewidth0 \strokec2 http://i36.photobucket.com/albums/e3...psa8bf073d.jpg}

RD 200
CB 650
DR 600 ( most comfortable bike I've had)
DR 600 Djeibel
XT 600 Tenere
CB 600 FS Hornet
DRZ 400 E
660 Tenere , Current bike

Still on the wish list ,Deus French Connection, Bumble Bee, or Blue & White W650 Street Tracker
Aprilia Dorsoduro 750.
KTM 1190 R Adventure