sounds similar to what happened to me the other day and it was my IAC

 

You may have "loaded" your intake and plugs. When you start a vehicle a few times without burning off the excess carbon, it will develope hesitation or a misfire. Pretty frustrating, but a cheap idea.

 

It started fine today, so I don't know what happened. Maybe it was what youre talking about siggie. If it happens again I'll look at the IAC soon but if it doesn't I'm gonna wait until it warms up to check everything out to make sure its okay.