There was an interesting read over at CGTalk with a big time modeler who is actually using 5 sided polys with success. He is picking and choosing where to put them but never the less he's purposefully using them. He was in the 4sided poly camp for a very long time.

Much of the talk was above me or I just didn't care to figure out what they were talking about, not sure which one it is.

I, as well as probably 95% of other modelers agree with Pengy, keep to quads whenever possible.

Comitted to excellence through art.