Jon Hamm stars in “Mad Men”

Saying goodbye: The 1960s are drawing to a close.

"Mad Men," AMC's period drama set in the Swinging Sixties, is finally ready to close the door on the decade -- and on itself.

The seventh and final season premiered almost a year ago, but as is becoming more and more common in this decade, it had a lengthy mid-season hiatus. The first of the final seven episodes premieres Sunday, April 5, on AMC.

It really is the end of an era. When "Mad Men" premiered back in 2007, its first episode brought in the best ratings that AMC had ever seen for an original series. Since then, the number of viewers has only gone up, and it isn't just audiences that love the show. Critics love it, too, heaping acclaim on it since the beginning and awarding it four Golden Globes and more than a dozen Primetime Emmys.

To recap: in the first half of season 7, subtitled "The Beginning," smouldering ad agent Don Draper (Jon Hamm, "The Day the Earth Stood Still," 2008) has had his life crumble around him. His wife Megan (Jessica Paré, "Hot Tub Time Machine," 2010) has left him and moved to the West Coast, and he's being forced out of the advertising agency that he's a partner in.

It's bad times for such a strong man, but no one's ever said that the 1960s was an easy decade. The mid-season finale ended not long after what may be the most defining event of the '60s, when humankind successfully landed on the moon, and against this backdrop of humanity's greatest triumph, the strong, unbreakable Don Draper finally broke down and nearly cried.

Will Draper get his life back on track as both the '60s and "Mad Men" rush towards their conclusions? There's only one way to find out. The first of the final seven episodes of "Mad Men" premieres Sunday, April 5, on AMC.

All in: To many, he stands as one of the greatest entertainers of the 20th century. Although he died in 1998, Frank Sinatra's name still commands respect and admiration amongst music lovers around the globe.

This year marks Sinatra's 100th birthday, and HBO is celebrating this milestone with a special four-hour, two-night event. "Sinatra: All or Nothing at All" premieres Sunday, April 5, and concludes the following evening. This is a closeup of the late performer's life, but it isn't your ordinary documentary.

In 1971, Sinatra famously held a retirement concert in Los Angeles, and his song choices for that special concert will guide the narrative of "All or Nothing at All." Along with archived footage of interviews and insight from some of those who were closest to him, the concert footage will tell his life story as it's never been told before.

Of course, Sinatra fans will know that he wasn't a one-trick pony. He also had a successful acting career, winning an Academy Award and earning nominations for several others.

He may no longer be with us, but Frank Sinatra lives on through his movies and music. Celebrate the 100th birthday of an icon Sunday, April 5, on HBO, with "Sinatra: All or Nothing at All."

Get hooked: Over the course of seven seasons, self-professed "extreme angler" Jeremy Wade has travelled to some of the most exotic and far-flung places on the planet. He's drawn by stories ripped from the headlines of deadly freshwater fish, from the small little piranha to terrifying freshwater sharks.

Season 7 of "River Monsters" premieres Sunday, April 5, on Animal Planet, and to kick off this premiere episode, Wade is heading to somewhere decidedly less exotic: Ontario, Canada.

That may be doing Ontario a disservice. It may not have the romance of the Amazon or the Congo, but Ontario is home to vast stretches of wilderness filled with hundreds upon hundreds of lakes -- some of them very big and very, very deep. Who knows what scaly predators lurk in those depths?

Well, Wade intends to find out. The zoologist is an expert in freshwater fish, and episodes of River Monsters typically begin with him looking at the legends attached to these freshwater fiends. Some of these fish have mythologies that stretch back centuries; others have been in the newspapers lately for their attacks on people.

Wade's goal is to catch his prey, but ultimately his plan is to educate us and show that, no matter how fearsome these watery predators may look and despite the fact that one of them might rarely mistake a human for a tasty meal, these "river monsters" aren't really monsters at all.

Whether you're a longtime Wade fan or a curious newcomer, "River Monsters" is easy to dive into. Season 7 premieres Sunday, April 5, on Animal Planet.