Get a Canon XS with kit lens for less then $500 and then get the 50 F1.8 lens for around $100. This way for a limited investment you can experiment with depth of field and low light phototography.
Shallow depth of field is one thing that you cannot do with any of the non-DLSR cameras others are suggesting. Also buy a fast prime lens like the one suggested above because the kit lens won't give you much depth of field control. I recomend canon only because they have the cheapest fast prime lens. The canon will also give you an excellant upgrade path in the future if you want to really invest in your hobby.
I can't stress how important it is to get a fast lens (low f-stop number) if you really want to get something different out of your DLSR
http://www.futureshop.ca/en-CA/produ...7324f0cbbeen02
http://www.futureshop.ca/en-CA/produ...de862ab57aen02
future shop has it on for 470 and the F1.8 lens on for 130.