Way too 80s, way too many bad jokes and the entire thing doesn't know if it's supposed to be a sex comedy romp or an honest drama. But I have to give it credit for having an ending that completely subverts this genre in a way.
Full of ambition and interesting ideas but I think Stiller loses a lot of impact here by constantly having to remind us Walter is not living in reality in the first 10 minutes, or even the first half. The scene with Sean Penn works really well and there are some really hilarious moments (the drunk pilot conversation in the bar), and Kristen Wiig can do everything well. But this script needed work. A lot of work.