I doubt you will find reliable hosting that includes unlimited bandwidth for cheap, but I use JaguarPC.
http://www.jaguarpc.net
Endless DiskSpace starts with 50 GB, free upgrades
Data Transfer (Bandwidth) 300 GB per mo.(10 GB per day)
Multi-hosted Domains UNLIMITED
Domain Parking UNLIMITED
Sub-Domains UNLIMITED
MySQL Databases UNLIMITED
FTP Accounts UNLIMITED
Email Accounts UNLIMITED
$12/month (or $6/month with a contract)
Their tech support is the best I have ever seen. I have been using them for about 4 years and have opened about 40 tickets, all of which were resolved within an hour.