Trivia

On April 8, 2013, a three-hour-long special entitled, SMAP's First Trip aired in celebration of the band's 25th anniversary since its formation in 1988. The band was given a three-day break to take a trip as a group, without an itinerary, allowing the members to do whatever they wanted. The episode became one of the most highest-rated television programs aired that year, marking above the 20% household share.

Highest-rated episode - After Inagaki's temporary hiatus in 2001, SMAP made their first television appearance as a five-piece for the first time in six months. A live episode welcoming back Inagaki aired on January 14, 2002, which eventually became the highest-rated episode of SMAPxSMAP, with 34.2 million viewers. The episode also is ranked at #7 for the most watched Japanese variety show in history.

On June 5, 2006, Michael Jackson made a surprise guest appearance. During the taping of the program's musical segment, S-Live, Jackson appeared on the set and visited SMAP. Chairs were brought in and the six of them made a brief conversation, along with a translator. The episode also aired footage of Jackson watching the band's performance in the production control room backstage, before he made his appearance on the set. Jackson promised SMAP that he would make an official guest appearance on the program the next time he was in Japan, though that did not come true, due to his death in 2009. SMAP was later invited to Michael Jackson's This Is It's world premiere, after having recorded Jackson's last television appearance.

Baby Smap is a five-minute-long spin-off or sidequel of SMAPxSMAP that has been airing on Sunday nights at 1:30 a.m. from April 15, 2007.

The program mainly features unaired scenes from SMAPxSMAP and scenes from next week's episode. Occasionally, the program is subtitled "New Project Factory" and SMAP members appear on the show, participating in the taping of short games. It was originally created to let young, rookie or "baby" television producers come up with ideas for a new segment for SMAPxSMAP. At the end of the program, SMAP members decide if the game can be used as a new segment on SMAPxSMAP.

SMAPxSMAP Special episodes - The Love Awards honor the best clips of the year with scenes that never aired on the program. The S-1 Grand Prix features a series of games with the losing team playing a punishment game. SMAP×SMAP MEMORIES FILE Final was the last episode of the series features clips from the show's twenty-year run aired on December 26, 2016 at 18:30 JST.