FT has been pretty good to me... highlights:
2001: Valumags et al -> Goldpoints -> 400K AA miles
2004: Icelandair to Rekjavik for free (at the summer solstice!) -- there were quite a few FTers visiting Iceland on this deal; happened to sit next to Spiff on the return flight.
2004: AA buy two transcons, fly anywhere for free: netted two tickets to Santiago (on top of all the miles/bonuses from flying four transcon roundtrips.)
Since then: Flew a bunch of great places in style, got million-mile status on AA, but I keep missing the amazing opportunities... one of these days!