Lee, there are so many, it is hard to know where to begin. But if I can make a suggestion? Go to Andy's orchids
http://www.andysorchids.com/
Click on the Dendrobium section ( from the drop-down) and just take a look what strikes your fancy. Andy always describes the cultural requirements very well.
http://www.andysorchids.com/Al...
( hmm, the link works)
I got a nice plant of Dendrobium hercoglossum for Christmas, it seems to suit my warm to intermediate sunny conditions well. Also Dendrobium bigibbum var compactum is very nice and I grow it bright and sunny. I got that one from Parkside Orchids a few years ago, and it is a really easy grower and bloomer.