Deadpool finally gets his due. A far cry from his last portrayal in the dreadfully off-mark X-Men Origins: Wolverine, this Deadpool is the "Merc with a Mouth."
For those unfamiliar with Deadpool, this is the story of a mercenary, Wade Wilson, who falls in love, is diagnosed with cancer, and goes off the deep end, not necessarily in that order. When his experimental "cure" leaves him looking like leftover roadkill he goes hunting for the man responsible with gleeful enthusiasm and a lot of murder.
For those familiar with Deadpool, there's a lot of little details that aren't accurate (it's not the Weapon X program, Vanessa isn't Copycat, etc.) but the core is there. Deadpool is cheerfully amoral, has zero respect for the fourth wall, and is a fount of non sequiturs and violence.
In addition to being straight up entertaining, this is a love story, an action movie, a comedy, a commentary, and, while explicitly violent, is still less gory than your average Tarantino movie. The set is littered with tiny jokes and references, from "Rob L" on a coffee cup, to jabs at Ryan Reynold's previous starring role as a superhero, to Wade's Bea Arthur shirt in a nod to Deadpool's canonical crush on the late actress.
If you're not offended by violence, sex, and language, odds are good you'll enjoy this.