Considering how much information the producers of ABC's "Lost" finally parted with last week - and how little else new was on the schedule for a post-season Thursday - you might have thought the two-hour season finale would draw a huge crowd.

According to the preliminary Nielsens, an average of nearly 12.2 million viewers watched the episode, with viewership peaking in the final half-hour at 12.687 million, slightly below the season average of 13.17 million. Time-shifting viewers may increase those ratings as they view. In any case, while it was enough to win the night, it might not have been enough to encourage ABC to let one of its bigger shows extend past the regular season again.

Mark your calendars . . .

. . . for AMC's "Mad Men," which returns for a second season July 27.

Also worth noting on the summer schedule, at least for drama junkies: TNT's "The Closer" and "Saving Grace," both returning July 14.

More 'Smallville' to come

"Smallville: The Complete Seventh Season" will be out on DVD and Blu-ray Disc on Sept. 9.

'Autism Heroes'

WPVI (Channel 6) will air the special "Autism Heroes," which looks at the experiences of more than three dozen families dealing with autism, on one of its digital channels (Comcast channel 246) at 8:30 a.m. and 6:30 p.m. today through Friday.