Juniper has LAN switches. They're well priced and run JunOS (different binaries than the routers though). They are based on commodity silicon and probably don't have as good a feature set as a cat. Note that Juniper doesn't really believe in L3 switches, so while they may have L3 switching it's not really the way that they want you to do things, they want you to buy a router to do routing. Their switches are a relatively new product and maybe not a good choice on the maturity front.
Juniper's routers are rock solid and I highly recommend them from a technical perspective. IOS 12.4 is a disaster. Unfortunately, your odds of being able to hire a random person off the street that knows how to work with JunOS aren't good, while it's good for IOS. So that is a real consideration too.
I personally dislike the cat 6500 series. They've just burned me too many times with excessive failures, bugs, and standard Cisco under-engineering. And I also dislike the fact that there's always a new Sup module out that fixes every problem that ever was and ever will be this time (unlike those Sups you upgraded to in the past, which only fixed a couple of problems and maybe created a few new ones). The Cat 6500 series is Cisco's cash cow, highly overpriced for what they are, but at least with the volume they move it's common gear and not too broken.
3750 series and 3550 series are good switches. If cost is no object (or not too much) they're a great choice for your edge. Stacking 3750s can get you to a nice medium density.
I haven't touched one yet, but the Cisco Nexus switches look interesting. Check them out, as they might be more interesting than a 6500. I don't know what pricing looks like, I just know they're a ground up new platform including new software. Normally that would be a huge no-no, but vs. a cat 6500 and current IOS, maybe a whole new platform is exactly what's needed to get them back on track.
Another possible architecture would be to use cheap managed L2 switches at the edge (e.g., SMC, HP, etc., or 2960s) and a good L3 switch or router in the core. As long as your needs aren't feature heavy, I like architectures that treat the last hop as a fairly dumb aggregation layer (that is, have closets close to the ports and just have the switches aggregate them into your network core).
I'd avoid Foundry and Extreme and Force10 right now, their current products aren't interesting and you aren't saving enough money to be worth the risks. If you're going to buy cheaper switches, buy a lot cheaper switches (read: L2 only).
Cisco's wireless stuff is good. Also look at Aruba Networks.