The only trailer I remember is for Under Seige (the only Seagal film I've watched in its entirety, and where I learned never to watch Seagal movies unless I just wanted to mock)... I just found it on YT, and it's hilarious. Watch it here - how many times do you hear the word "cook"?

By the way, my all-time favo(u)rite Seagal scene is this one from Executive Decision - warning! - major spoiler.
Skip right to 9:22. The film was so much better as a result of his - er, decision.

I've probably blocked out all the trailers of his I saw in the theater. :P

There's a move marathon of jean claude van damme and steven segal films on a couple of channels at the momment to see who's better. I think they are both equally bad, watching their movies is the worst kind of torture.

At times I feel tempted to turn over and watch them but that sane voice in my head Screams "NO"

As for the actual question I have never see a steven segal film advertised.

I'm not imagining it - they are both straight to video/dvd stars, aren't they?

Executive Decision has to be Seagal's best film ever.

Sad to say, I think some of those mentioned here actually did make it to the theaters first...