HOT TUB TIME MACHINE 2
Hot Tub Time Machine came heavily influenced by Back to the Future (1985), having a number of references and following the same basic plot structure. Hot Tub Time Machine 2 then functions as the series equivalent of Back to the Future Part II (1989). In exactly the same way as Back to the Future Part II took the familiar characters into their own futures to sort out the lives of their children and older selves, all the while depicting a world that was a comic extension of contemporary pop culture, so Hot Tub Time Machine 2 takes the familiar characters into their own future. (What it doesnt do is copy the latter two-thirds of Back to the Future Part IIs plot, the more conceptually challenging scenes with the characters venturing into a dark alternate present and then into the margins of their own previous visit into the past). There is even a set-up for a third film at the end, which would take the characters into the historic past just like Back to the Future Part III (1990) did.
You could coin the soundbite comment and say that Hot Tub Time Machine 2 is Back to the Future Part II reconceived by way of The Hangover (2009). This in a way is the fundamental problem of conception that Hot Tub Time Machine 2 suffers from. The first film was an amiably coarse comedy premised around a bunch of characters confronting their own past with some mildly clever culture clash jokes and time travel twists thrown in; this film is premised around three of the four central characters from the first film engaged in coarse and vulgar exploits and with some very occasional time travel elements added to the mix. Largely, this is a film centred around its actors, most notably Rob Corddry and Craig Robinson. (John Cusack, the star and a producer of the original, is very noticeably absent. One assumed that this had something to do with Cusack not doing sequels or liking the script but Cusack issued a statement to the effect that nobody even asked him to come back, which is odd considering that the director of both films Steve Pink has been a long-time friend of his).
Essentially, the sequel has been set up to let Rob Corddry and Craig Robinson go for it. Their scenes end up being astonishingly vulgar one where Craig Robinson is required to have sex with Adam Scott via virtual reality on television; Adam Scott given a drug that causes him to wildly hallucinate and then an ER scene that involves a very large syringe being jabbed into his engorged testicles and everyone being splattered with goo. In the original film, Rob Corddry owned the show with his loud and raucous presence, taking over every scene he was in. The sequel seems to assume we want more of the same and so winds Codddrys obnoxiousness up by a factor of ten but when it comes to the opening scenes with him going on about rouged nipples and punking a female associate to look out the window to see someones genitalia pressed up against it the effect is now tiresome. There is a mild amusement about some of the gadgets of the future especially an automated car that decides it has to kill Rob Corddry but the rest of the film and especially the time travel twists feel perfunctory. The crude and rude comedy seems to be all that Hot Tub Time Machine 2 has going for it. In the first film, there seemed more of an innocence to the characters so that this was actually funny, now it seems like the equivalent of the loudmouth at the party who is in everyones faces demanding attention for what a wild party animal they are being.
You are not required to look too carefully at the logic of any of it case in point being how a trip into the future somehow magically cures Rob Corddry from a fatal shotgun blast to the crotch. You would think that all that this would do is transport a fatally wounded man into the future. Or in that several times we see the characters present selves inhabiting their older bodies leading to the assumption that the time travel is all mental, all this would surely do is leave a wounded Rob Corddry in the tub back in the present (with not long left to live) while his mind travels forward. You get a sense of how indifferent the film is to logic or its characters by the jolt surprise that comes right at the end as a double of one of the characters emerges through time from the hot tub and blows his counterparts head off with a musket. This gets an audible gasp from the audience at the audacity of killing off a main character. Without even missing a beat, the new version has everybody else jump into the hot tub to go and sort out American history, which becomes an excuse for a montage of historical party shots over the end credits. The almost indifferent killing of a core cast member and the lack of any surprise by everybody else to the killing of their friend is just another example how miscalculated this film is.