A few questions... I'm thinking of getting a second domain to move my blog and a few other sites on there. People with domains, what are your domain registrar and webhost, what do they offer and how much do they cost and would you recommend them or not? Replies in comments, please.
(Quite belated edit - I'm looking to get a .net or .com domain, .net is the most likely candidate at this point. I'm not after .nu domains or anything like that. :)

I use Doteasy. The registering is 25 bucks, but they offer free hosting, indefinitely. And I can always find a cheaper place to renew it when the time comes.

I use namecheap.com to register my domains and wbws.net for hosting services. I like wbws' services so far. Just check here for more details.

I registered my domain at register.com, because they have really good support options, though they cost a bit more than other places ($35/year). My webhost is phpwebhosting.com, and I pay $10/month for decent hosting there. (all prices in US dollars)

we use ghoulnet, they offer whatever you want to pay for...
(I don't know how much we pay for hosting as I don't pay for that, I only pay for our .co.uk domain which is just redirected)