Ratings for the House and Big Bang Finales, and More

Monday's ratings recap: 8 pm/ETDancing with the Stars averaged 18.3 million total viewers over its two-hour run, down 10 percent week-to-week. The House season finale placed second in the hour with 12.33 million, gaining 200K. Or so we think. (Who can be sure of anything anymore?)  CBS' Big Bang Theory wrapped up its second season with 9.8 mil (its biggest audience since April 13), while lead-out How I Met Your Mother (8.7 mil) slipped 200 thou. Gossip Girl (2.33 mil) inched up 100K. 9 pmCBS' Two and a Half Men (12.9 mil) and Rules of Engagement (10.13 mil) dropped 8 and 10 percent, respectively, while 24 held steady at 10 mil. Medium's back-to-back episodes this time around averaged 6.77 mil, down 450K.  One Tree Hill matched last week's 2.28 mil. (An aside: OTH recapper Robyn Ross, who is screening the season finale today, just IM'd me to say, "It rocks!" Crave elaboration? Email Mega Buzz.) 10 pmCSI: Miami topped the hour with an audience of 13.37 million (down 360K), while ABC's Castle closed the book on its freshman run with another increase — 550K — to deliver 10.55 mil. Does anyone else smell a renewal...?Crave scoop on your favorite TV shows? E-mail senior editors Matt, Mickey and Tim at megascoop@tvguide.com.