I was at the mall on Sunday because I didn't want to be home during the tension that is the Army Navy game, but I didn't really have anywhere specific to go.
The parking lot was insane. Insane. I didn't even try lookin up close, and I headed to the back lot, which was also full of both cars and people sharking the aisles looking for spots. I liked out and caught someone walking in a back corner before too long.
I'd say several places has very long lines. I walked in to GAP because they were having something like 30 or 40% off all purchases and DH could use a new heavy long sleeved shirt, but the line was so long I didn't even look around. Several other places had huge lines as well. I bought a necklace at Macys, which was something like $39 originally and on clearance for $6.99. The counters out in the open had lines of maybe 6-8 people, but I went to a back counter and only waited behind 2 parties.
So I'd say it was crowded, but mostly manageable, with the exception of a few stores. I haven't been to a mall at Christmas in years, so I can't say whether it seemed like more or less activity than in years past.