Just a few of the clipart images I found at iClipart.com while looking for Heated:
Heated, Heatedly, Angry, Acrimonious, Ardent, Avid, Bitter, Excited, Fervent, Fervid, Feverish, Fierce, Fiery, Frenzied, Furious, Hectic, Impassioned, Indignant, Intense, Irate, Ireful, Mad, Passionate, Raging, Stormy, Tempestuous, Vehement, Violent, Wrathful, Two Tense Man Sitting At A Table Under A Thundercloud In A Heated Debate

Favorite "Heated" Sayings?
'heated debate', 'heated argument', 'the heat is on', 'If you can't stand the heat, get out of the kitchen', 'in the heat of the moment', 'turn up the heat'