Here's my list...
AMF Harleys (bowling ball good, motorcycle bad)
Other Harleys (had to say it)
Honda Hawk Automatic (had one sorry to say)
BMW Cruisers (like, why?)
OCC Ape Hanger Bikes (like, why?)
Did Someone Say Indian? ('nuff said)
Suzuki Water Buffalo 2-Strokers
But that's just my opinion...