Well... to me, I'd almost divide Stross' works into two tranches: the "The Laundry Files" books, and everything else. In that regard, I think Glasshouse is fairly representative of the "everything else" tranche. But even then, there's a fair amount of variance in his works. I wouldn't, for example, necessarily compare Halting State and Glasshouse, or Rule 34 and Singularity Sky. I guess that's a way of saying that while Stross has his favored themes and topics, he's far from formulaic and I don't feel like you can pigeon-hole his "style" too narrowly.

That said, I haven't read every other work Stross has written, but I've read a pretty good chunk of them. And almost all of the "The Laundry Files" novels. Me personally, I recommend pretty much all of it. :-)

EDIT: Just realized that there's really a 3rd major tranche of works in Stross' ouvre: the "The Merchant Princes" books. I forgot about those, as I haven't actually read any of them (shame, shame, I know...). All of what I've read of Stross to date is from the "The Laundry Files" series or the "everything else" batch, minus "The Merchant Princes".