On the left of the home page click Spend Points. Then click a category or click Quicklist by Partner to see all the choices.
A few examples:
Applebees $5=750 $10=1,400 $20=2,500
Rainforest Cafe $25=3,250
All Gas Cards $10=1,400
WebCertificates $10=1,500 $25=3,500
Barnes & Noble $5=750 $10=1,250 $25=2,750