If you are after a good reliable host to host your Joomla or WordPress site, I recommend bluehost.com
I have been using them now for six years – they are hosting this site you are reading right now. They have been very helpful, when my website got hacked they were able to revert me back to an old copy they had backed up.
Probably the best feature about bluehost is that they have some software called simple script which installs Joomla with one click. Makes everything easy. They are cheap for what they offer too. I’m in Australia and they are in the USA but that’s never been a problem.