1. Airline $$ off! How can you beat $ to $ credit? I use NW $50 off reward on regular bases. Only caveat is you can only redeem once every often (quarter.. i believe).

2. WSJ. I successfully used the $45-level reward for renewal. this is valuable since I'd otherwise have to pay cash or airline miles for it.

3. Magazine. If they have a magazine you'd subscribe anyway, it'd a fantastic deal. (i.e. $20 for Travel & Leisure. I was going to get it anyway and only cost me <1.5 hrs. of my time for 1 yr. sub.

Contrary to the general sentiments, i just don't think miles/points are great value for the $. i have redeemed for HH points but won't be redeeming for miles or points again anytime soon unless i'm swimming in more e-reward $$s than i can use.