I recently spent four days in Palm Springs visiting friends from the past. We didn't have chowhounding on our agenda, but did confirm that Manhatten in the Desert (written about several times here) is the real thing. Sandwiches with good meat (mine was pastrami) stacked "up to there". The rye bread did tend to fall apart and it became a knife and fork thing, but with that much meat it might have been inevitable.
We also stopped into Palm Springs Fudge & Chocolates and split a date shake. The owner made it from "real" ingredients, milk, ice cream, and a date puree made from dates from Thermal down the valley. It was the real thing and very good. The owners are a husband and wife who recently moved there from San Francisco and are very gracious and friendly. Just for comparison, the last time I went to Shields for a date shake was a year ago and I gave up with the long line and one shake-maker, as well as the generally run-down look and not-interested staff. What a day and night comparison between the two places.
Palm Springs Fudge & Chocolates
Fudge, Ice Cream, Date Shakes, other confections
211 South Palm Canyon Drive
800-653-8343 (may be 888-...)