Best motherboard warranties:

After some searching I found these:

EVGA: Lifetime Warranty:
mobo link
I would not recommend EVGA boards based on this review from Newegg:

"Cons: After 3 months the USB ports all stopped working. EVGA charges more money to RMA the board. RMA's board and replacement has bad RAM slots. EVGA tells me to go back to vendor if I want my $$ back.....AFter two boards I deserve a refund."

Intel: 3 Year Warranty
mobo link

Asus : 3 years but says to contact your reseller

mobo link

Gigabyte supposedly has a three year warranty but I cannot find it on their website.

Foxconn: 3 year warranty
mobo link

DFI: Mentions 3 Year Warranty but can't find a real warranty policy on the site