LOS ANGELES — Crimebusters, hoofers and klutzes were ratings winners last week as the summertime slate of police dramas and reality shows held fast.

"America's Got Talent" was the most-watched program with more than 13.8 million viewers, according to Nielsen Media Research figures released Tuesday.

Other shows that cracked the top 10 included "Wipeout," in which contestants are challenged by an obstacle course that includes the likes of giant rubber balls and a "dreadmill" treadmill, and the more graceful "So You Think You Can Dance."

A quartet of crime dramas, including "Criminal Minds," "NCIS" and two "CSI" shows, along with the sitcom "Two and a Half Men" and stalwart news magazine "60 Minutes," helped push CBS to the top spot among networks.

The TV picture will be far different in the next couple of weeks: the Summer Olympics begin Friday and run through Aug. 21, with blanket coverage on NBC and NBC Universal cable and broadband platforms.

Last week, CBS averaged 6.3. million prime-time viewers. NBC had 5.7 million , while Fox had 5.1 million viewers but won among advertiser-favored 18-to-49-year-olds.

ABC had 4.4 million viewers and The CW 1.5 million.

NBC's "Nightly News" won the evening news ratings race, averaging 7.5 million viewers. ABC's "World News" had 7.3 million and the "CBS Evening News" 5.5 million.

A ratings point represents 1,128,000 households, or 1 percent of the nation's estimated 112.8 million TV homes. The share is the percentage of in-use televisions tuned to a given show.

For the week of July 28-Aug. 3, the top 10 shows, their networks and viewerships: "America's Got Talent," NBC, 13.85 million; "Wipeout," ABC, 9.7 million; "Two and a Half Men," CBS, 9.35 million; "So You Think You Can Dance" (Wednesday), Fox, 8.84 million; "Criminal Minds," CBS, 8.7 million; "So You Think You Can Dance (Thursday), Fox, 8.69 million; "NCIS," CBS, 8.5 million; "CSI: Miami," CBS, 8.44 million; "60 Minutes," CBS, 8.08 million; "CSI," CBS, 8.03 million.