We just had a new outdoor mall open up in my town last year,
The Promenade. It's really nice!
There have been a lot of Chicago-area malls discussed already. Some others I like: Fox Valley Mall in Aurora, Chicago Premium Outlets in Aurora, Yorktown in Lombard.
Not-so-good malls: The first one I think of is
North Park Mall in Villa Park. North Riverside Park Mall used to be good, but now...not so much.