'Saturday Night Live' is an institution at this point, and will never leave as long as there's no real competition. But it does go through stages. It looks like this year will end another era, as it's being reported that Kristen Wiig, Andy Samberg and Jason Sudeikis will all leave at the end of the year.

Us Weekly broke the story, and this all makes sense for these in-demand performers. Kristen Wiig has been acting in movies for a while since she first joined the SNL cast in 2005, but after last summer's 'Bridesmaids,' she can call her own shots. Andy Samberg joined the same year, and has already been a lead in a movie ('Hot Rod,' which - to be fair - bombed. But, also, to be fair: it's hilarious), and co-stars with Adam Sandler twice in 2012 with 'That's My Boy' and 'Hotel Transylvania.' Jason Sudeikis is the vet of the three, having joined in 2003, and was just in the hit 'Horrible Bosses' and already has a number of big-screen roles under his belt.

Like any workplace, there's always a lot of turnover around the same time, and with these three leaving - if they do go - it could lead to even more of a shake up. At this point Fred Armisen (ten years), Seth Myers (twelve) and Keenan Thompson (nine) are the old guard, though Darrell Hammond has set the record with a fourteen year run (and will show up now and again). Bill Hader (seven) also has a promising career, so it wouldn't be a shock if he called it quits soon as well.