I thought perhaps we'd like to each post some that come to mind... it might also be helpful for the poor spellers and the brits and canadians to understand our destruction of the English language

But for starters... it's just a simple "sound alike"
Imminent and Eminent
eminent ~Towering or standing out above others; prominent: an eminent peak.
imminent ~ About to occur; impending: in imminent danger.
Disclaimer... I use dictionary.com to check myself.