Greg Grunberg was not known before this as lead material. And while his friendship with JJ Abrams gave him a few roles, they were mostly cameos or small roles. But he is showing here, that he can pull the weight of a movie. Of course the script is helping a lot, because the jokes are working on almost every level.
Is it ridiculous? You bet! Is the CGI obvious? A strong yes here too. But with a movie in that budget range you should know what you are in for. This is not a blockbuster, but therefor can go and do things that a big budget movie would not be allowed to do and get away with. If you are afraid of spiders, you might not want to watch this, but if you are down with some fun and witty horror comedy, that does not take any prisoners? Go on, get it and watch it
Is it ridiculous? You bet! Is the CGI obvious? A strong yes here too. But with a movie in that budget range you should know what you are in for. This is not a blockbuster, but therefor can go and do things that a big budget movie would not be allowed to do and get away with. If you are afraid of spiders, you might not want to watch this, but if you are down with some fun and witty horror comedy, that does not take any prisoners? Go on, get it and watch it