Question: Do you recommend a printer in the dorm room?
Yes, absolutely. Now that printers are so cheap, there's really no reason not to have your own. (I bought one for my son that came with ink cartridges and cost less than what some folks pay for the ink alone. Surprisingly, the ink supply lasted more than a day!) Although many professors allow you (or even expect you) to submit papers electronically, you'll still be glad that you can print right in your dorm room.
If you don't already have a printer, and a parent, grandparent, aunt, uncle, etc. is looking for high school graduation gift ideas, suggest an “All-in-One" that will print, copy, scan, and fax. You may not need the fax too often, but I bet you'll use it occasionally, and I promise you that all the other features will come in handy during your college career. I bought a new All-in-One just yesterday and I paid $70. This included free shipping and ink cartridges. It's not the snazziest model around, but it will suit my needs (and there are cheaper ones out there, too).
The College Confidential discussion forum is full of threads on other must-haves for your dorm. (Some are even school-specific.) So check them out when you can.
But note that these lists are just suggestions, and--like many times in life--less is often more. My College Confidential colleague Dave Berry always recommends that, before you pack for the dorm, spread everything out that you plan to take and then put half of it back! (But keep the printer ;))