Many of you have probably already heard Ausiello reporting via NBC that S3 will end with a 2-hour season finale on May 24. (http://ausiellofiles.ew.com/2010/02/08/save-the-date-chuck-finale-set-for-may-24/).
This does pose a couple of questions. If you simply count the Mondays, one episode a week, we should get to episode 19 on May 17. First thing that occurs to me is they may just skip one week along the way for reasons yet unknown, and make 19 a two hour episode (most likely scenario, I think). If they are linking 18 and 19 into a 2-hour event (like they did for the premier), it means they’ll be skipping two weeks somewhere after the Olympics (bummer, hope that isn’t the story). The best, and least likely scenario, is they aren’t skipping any weeks; and the season finale represents a previously unordered episode 3.20, of 2-hour duration (be still my heart!).
I’ll post more information here as it comes available.