[Red Alert]

Does anyone actually use any of the other ones apart from article? I did use Book for my thesis and Report for a handful of documents up and down. It's only recently I've discovered some of the handier ones like exam and letter.

[Clinker]

I use amsart (American Mathematical Society article) most often: good for articles with mathematics and nicer defaults than article. I use letter sometimes and I use the memoir class for a substantial document: it's like book, but with lots of bells and whistles. I hadn't heard of the exam class, but it looks like it might be really useful to me, thank you!

[oscarBravo]

I use the Koma-script letter class a lot (as in, for every letter I write). I've done some documentation with the book class, and I know I've used report in the past. The moderncv class produces a very pretty CV.

The memoir class looks nice, I reckon I'll get some use out of that.

[djpbarry]

I've used the IEEEtran class which is pretty much the standard for Maths/Engineering papers. I've also tried using the beamer class for presentations, but I honestly think it's more trouble than it's worth - I don't really see the advantages over, say, the article class for putting together a pdf presentation, particularly if, like me, you don't want your slides clogged up with unnecessary headers and footers.

[Permabear]

I've used the article, report, memoir and letter classes a lot over the years (the latter recently replaced by KOMA-Script letter class, of which I'm also a fan). I used the book class for my Ph.D. thesis.

[Red Alert]

I've used IEEEtran as well, but I only found it useful for doing a fully formatted version. When I've used the "for review" mode it's always more hassle than just article.

Forgot, I also use sciposter - very handy, but there's at least another poster class as well that I don't know the name of.

[djpbarry]

Originally Posted by Red Alert

Forgot, I also use sciposter - very handy...

Ooooooh, that could be useful. Ta.