So far I like the following: Cooper, Newton, Paddington, Heathcliff, Fletcher.
note: his brother, a 7 month old maltipoo, is named Sherlock. I don't like Watson because I don't want the new puppy to be in the shadow of his "big" brother. Ironically though, Sherlock is full grown at 9lbs and his new baby brother will mature to around 14 - 17lbs.