Not absolutely sure this is up to date, but:
poker.org $1,000,000
engineering.org $198,000
sexe.org $151,400
date.org $150,349
revolution.org $120,000
ringtones.org $120,000
Travel.info $116,000
NewYork.info $70,000
Free.info $42,000
Chinese.info $37,000
Casino.info $35,127
Dubai.info $35,000