Viewers happily welcomed back Fox’s returning “So You Think You Can Dance” in its first Wednesday broadcast, but they weren’t nearly as welcoming to a trio of new summer shows.

The third-year “Dance” dominated the evening last night, averaging a 4.0 among adults 18-49, according to Nielsen overnights, to give Fox an easy win. No. 2 CBS, which aired all repeats, was a distant No. 2 at 2.4.

“Dance,” last summer’s top-rated series among adults 18-49, improved on last week’s 3.7 for its Thursday premiere by 8 percent. It also bettered its showing on the same night last year.

But for the summer’s new offerings, the news wasn’t quite so good. Of the three new shows last night, ABC’s “The Next Best Thing: Who is the Greatest Celebrity Impersonator?” had the best showing.

“Thing” averaged a 2.5 at 8 p.m., placing second behind “Dance.” It did grow 8 percent from a 2.4 to a 2.6 in its second half hour, and it just barely topped Fox in total viewers and households, at 7.749 million and a 5.0 rating.

In the same hour, the CW’s long-delayed teen drama “Hidden Palms” placed fifth with a 0.7 18-49 rating and just 1.8 million viewers.

And ABC’s adventure drama “The Traveler,” which had a sneak preview behind “Grey’s Anatomy” a few weeks ago, failed to benefit from that exposure. In its timeslot debut, the show placed a distant second at 10 p.m. with a 2.0 18-49 rating, despite being the only original program on the Big Three that hour.

Meanwhile, Fox was first for the night among 18-49s with a 4.0 average rating and a 12 share, with CBS second at 2.4/7, ABC third at 2.0/6, NBC fourth at 1.9/6 and CW fifth at 0.9/3. Univision’s overnight ratings weren’t available at press time.
 
At 8 p.m. Fox led with a 3.3 rating for the first of two hours of “Dance,” followed by ABC with a 2.5 for “Thing.” CBS was third that hour with a 1.9 for an hour of “King of Queens” repeats, NBC fourth with a 1.7 for an hour of “Most Outrageous Moments” and CW fifth with a 0.7 for “Hidden Palms.”
 
Fox led again at 9 p.m. with a 4.7 for its second hour of “Dance,” with CBS and NBC tied for second at 2.5, CBS for a repeat of “Criminal Minds” and NBC for another hour of “Most Outrageous Moments.” That pushed ABC down to fourth with a 1.5 for a repeat of the “Traveler” pilot, while CW was fifth again with a 1.0 for an original “One Tree Hill.”
 
CBS took the lead at 10 p.m. with a 2.9 for a repeat of “CSI: NY,” while ABC finished second with a 2.0 for an original “Traveler” and NBC third with a 1.5 for a repeat of “Medium.”
 
Fox also edged the competition for the night among households, finishing with a 5.7 average rating and a 10 share. That was just ahead of second-place CBS’s 5.6/10, with ABC third at 4.2/7, NBC fourth at 3.9/7 and CW fifth at 1.5/3.