Ghostbusters hits theaters this weekend, and as more and more begin to screen the film, it's become apparent that -- hey, it isn't that bad!

Tell me about the box office: 

Early positive reviews over at Rotten Tomatoes (currently 75% Fresh) may have a nice impact on the film's opening weekend, with estimates around $50 million. At Fandango it's the top preseller for a live-action comedy in 2016, so it'll give current box office champ The Secret Life of Pets a good fight for that top spot this week.

Tell me about Slimer:

One of the more famous ghosts in Ghostbusters lore makes his triumphant return in the new Ghostbusters, and while Slimer's scenes are short and sweet (and include a female Slimer, too), they almost decided to pack in a Slimer origin story, to boot. Slimer's a pretty weird-looking blob of a ghost, and it might be interesting to know what or who he is.

Screenwriter Katie Dippold told Cinema Blend that the film almost did just that!

"We debated showing the creation of Slimer. There was even a scene once where they are battling an old Italian ghost, but they’re still figuring out the proton packs. So when they fire at it, he just becomes Slimer… It was just like, ‘I don’t know if it feels right to answer what Slimer is when it was created before.’ So that didn’t feel quite right."

Probably better not to go the route of an origin story for Slimer because then he can just be weird and odd and we can come up with our own origin ideas. The great thing about that first Ghostbusters is it didn't explain its entire mythology -- it just let some things be weird. 

Tell me about that cameo:

Warning: This part's a spoiler, so read at your own risk.

Many of the original Ghostbusters cast do pop up in the new one, including Bill Murray.

Murray famously threw a whole ton of shade at any continuation of the Ghostbusters movies, preaching his reluctance to be involved. In one version of the Ghostbusters 3 script, his character Peter Venkman was killed off in the first five minutes, but in the Ghostbusters reboot he agreed to appear briefly as a supernatural skeptic.

His cameo almost didn't happen though.

In an interview with Uproxx, screenwriter Dippold says they had no idea whether Murray was actually going to participate until right before the scene was to be shot.

"We called the mysterious phone number," she begins, referring to the number you call if you want Murray for a movie. "We sent him the script and asked him to play that part. Then a day before we shot it, yeah, we found out he was coming in."

On whether they had a backup plan: "I have no idea. It was really crazy. It was a very stressful time, but it made it all the more exciting when he showed up."

Thankfully he made it!