Indeed, some zoned awards are really good, ANC to TNR for 120k in biz on Skyteam seems like a good deal!

I've written a tool that calculates the # of miles needed for awards on different airlines/alliances (also a oneworld RTW itinerary validator).

http://jph.bytestacker.com/award.htm

it may be a bit out of date with new continental/skyteam Sleazypass awards.