I used to work at Children's, so this thread caught my eye....
If you folks are looking for a decent and safe place to live, consider Irving/Las Colinas.
John Carpenter Freeway will take you right to Parkland/UTSW in 10 min. The traffic is not too bad (if you leave early), though folks in Dallas do drive like lunatics!
Besides, you can take the TRE (commuter train) from Fort Worth all the way to Downton Dallas. It stops at Medical Market Center, practically 500 yards from the ER entrance.
I worked at Children's and Parkland hospitals and I almost never drove. It was so convenient to take the train from the South Irving station to UTSW.
Unless you get a good deal, it's a hell of alot cheaper than downtown (and safer than Oakcliff.)
Las Colinas and Valley Ranch are the "foo foo" part of Irving. I lived in LC on Thomas Jefferson Park for 4 years.
For those of you considering renting, check out Remmington Hills, Jefferson Creek or any of the apts on the Park. I had a great view of the canal in the park and only paid 530 a month!
Good luck all at UTSW. It's a great school!