oh boy...old guy here, let's see if I can remember most of them, I'll try to remember the dirt bikes first...
1969 Honda Mini Trail 50
1973 Suzuki TC125
1977 Yamaha DT250
1974 Suzuki TM125
1979 Honda CR250
1979 Honda MT125
197? CZ 390
198? Yamaha YZ400
198? Can Am 250 TNT
1987 Honda XL600R (current)
1980 Suzuki RM125
1985 Yamaha XT600
Street Bikes:
1954 Allstate scooter (current)
1977 Suzuki GS750
1967 Triumph TR6
1970 Triumph Daytona
1968 BSA Thunderbolt
1982 Honda FT500 (2, one brand new in '82, one used in 2006)
1977 Yamaha RD350
1982 Yamaha Seca Turbo
1986 Suzuki Cavalcade LX
198? Honda 650 Nighthawk
1979 Honda CX500 Custom
1982 Yamaha XV920 Virago
1982 Honda GL1100 Interstate
2000 Suzuki Bandit 1200s (on Steroids)
1999 Kawasaki Concours 1000
2006 Buell Ulysses (current)
There may be more, I'm sure there are. These were all owned, ridden, some crashed in the dirt and enjoyed.