Any suggestions for food along the #7 train in Queens?
Another source of info I don't think anyone's mentioned yet is the article Jonathan Gold did in the May 2001 issue of 'Gourmet' magazine. Titled 'Ticket to the World,' it was a four-page article on exactly what you're asking about - taking the 7 train into Queens as a way of exploring all of the ethnic enclaves and cuisines that can be found along it's route. It's a great start to exploring this route if you can find a copy, though a few hours on this board will lead you to even more recommendations than Jonathan could fit into his article.
This may be too late for you (since I assume you were planning this for this past Monday), but might help anyone else planning a similar day of exploration.
Any preferences or types of food you are or are not interested in? What have you eaten before and liked?
A list that Eric did a couple of months ago is a start. Any place that he says is on Roosevelt and many of the others are reachable from the 7.
Sripraphai, a Thai place, is the only one that, assuming you like Thai food, is universally acclaimed.
Any others on Eric's list you are curious about ask away and folks will respond.