I'll start this one off.
The Linksys WRT54G. Why because you can't upgrade the firmware to the latest and if you do, the current date of the router goes to Jan XX, 2006 (XX being the current day of the current month). I tried 2 brand new ones with the same results, Linksys tech support says nothing is wrong with the firmware, 2 techs claimed that the Current Time area under the Status tab is when the firmware was released, when I said don't you mean the area above that which says firmware version, they said that both areas are when the firmware was released. And with that, I leave you with this......
http://www.illwillpress.com/tech.html
and
http://www.illwillpress.com/tech2.html