An impressive number of viewers watched ALCS game #5. From overnight Nielsen ratings;
"Fox is getting a lot better luck with the ALCS this season than they did with the NLCS last season. From 8-11p, ALCS Game 5 (Yankees v. Angels) delivered a 3.3/8 among Adults 18-49. The final ratings this afternoon are expected to make this the highest rating game of the series. It’s well ahead of last year’s NLCS Game 5 on FOX (Phillies v. Dodgers, Wednesday 10/15/08) by +27% among Adults 18-49 (3.3/9 vs. 2.6/7). The best news for Fox is that the Angels won, pushing the series to at least 6 games."
Here's a link to the TV rating scoreboard.