8. A couple of beautiful instances of Chekhov's gun.
"Chekhov's gun" is a narrative principle that states, simply, to not show anything on the page, the stage, or the screen unless you absolutely intend to use it. When a movie famous for its multitude of sins gets such a basic principle right, it does so in splendid and gory fashion: In a scene set during Kelly Ripa and Michael Strahan's morning talk show, the camera lingers over Ripa's shoes--sharp stilettos worn in honor of some guest or another who is slated to stop by. This could've been complete nonsensical bad-movie non-sequitur if, later in the film, she didn't use those exact same stilettos to curb-stomp a shark that infiltrated the studio.
The ultimate Chekhov's gun resolution is both an actual gun and the hand that holds it. In the first few minutes of the film, Tara Reid's hand gets bitten off by a shark. In mid-plane crash. While she's unloading an air marshall's pistol clip into it. The last big kill of the film involves our protagonist magically retrieving Reid's severed hand, still holding the gun, and using it to pop some caps into some sharks. The ultimate first act to third act payoff.
7. Get in on the ground floor of what might be a new Rocky Horror Picture Show-style audience participation tradition.
RHPS's midnight showings are places where we shout things at the screen, dress up like the characters, and act out our favorite parts. Why not start a tradition with SyFy's best-performing movie to date? Dress up as one-armed April Wexler! Yell out "Wubba Wubba Wubba" every time Downtown Julie Brown is on-screen. Maybe throw Shark Bites at the screen every time a gratuitous cameo appears.
Speaking of cameos...