MSI (so far, only for the K7T Pro2-As that just died this year)
Creative (only for the poor Nomad II(0mb) firmware support)
Logitech and Microsoft (only for these optical mice that still aren't perfect yet, and for abandoning the true 3 button mouse, no wheel! I still use their stuff but I shudder)
IBM (Storage tech support for not even answering questions because my drive serial number was apparently OEM).
Gateway (For all those defective E-3400s with the Intel NLX board)
ATI (For all those troublesome Rage 128s)
Acer (mostly for their laptops)
Microsoft, Nintendo, Sony (only for overpriced consoles)
Squaresoft (for any game they didn't open up to all platforms, the characters in FF10, and allowing that FF movie)
Generic (for any problems I've ever had with generic ram)
Compaq, Dell, Gateway, IBM, HP (for daring to create and sell POS SOHO computers when their corporate lines are the only good stuff)
NVIDIA (only for not making the source code for Voodoo drivers available, I like my NVIDIA cards, but people with Voodoos should be able to have their fun too

)
Sony (It's hard enough to decide between compact flash and smartmedia, why introduce memory stick? why? why? why?!)
I probably have more in mind but I'm absurdly tired now.