I just updated my Top Five Beginner Digital SLRs guide. Check it out to find out what I think the best affordable, entry-level DSLRs are. There are cameras from Nikon, Canon, Sony and Pentax and the most expensive camera only costs US $799 with an 18-55mm kit lens:
Top Five Beginner Digital SLRs | Camera News & Reviews
If you've got any questions or you have your own favorite entry-level DSLRs, post them in the comments section at the bottom of any page of the guide. Your comments, questions and suggestions just make the article better