I gave this film a six out of ten simply because it really isn't a good movie, although, it is highly entertaining. This is the type of movie that used to keep me from changing the channel.
Syfy (formerly Sci-fi Channel) used to show 90% - 95% science fiction, with IMO about 1/2 of the programming being fairly good shows and the other half being cheesy, goofy, and really not that good, but still all very entertaining. They have since outweighed their science fiction shows and movies with Syfy Original reality TV programming. This has cause me to change channels, and often avoid Syfy for days while nothing but reality TV programming and early morning infomercials dominate several days of each week. My TV used to be locked on Syfy, only changing to other channels for a few hours each week to watch some of my favorite new shows on other networks, like Fringe, Smallville, Heroes, and a few others here and there, but I would always return the channel to Syfy when those other shows were over.
Movies like this one, "Malibu Shark Attack" are great to have on while working from home, surfing the Internet, and doing other things that take attention away from the TV show that is on. I can't count the number of times I've either missed a good show and been upset for this same reason, or failed to get something done that was important because I was watching something really good on TV. Having movies like this on, which is why I used to love Syfy, is a gift. I can watch it and be entertained if I'd like or have it on in the background and get something done (like this review I'm writing right now as this movie is showing - I've seen it at least twice already) knowing that it will show again within several weeks.
A movie doesn't have to be great to be worth watching. This movie is, as I say again, entertaining. I would rather watch this, and movies of this quality (or lack thereof if you prefer) and be entertained than watch reality TV programming about anything, and that's what is taking over Syfy and much of television today. If you don't have to see a great movie and want something entertaining, good enough to hold your attention if you'd like, and has decent (or at least fun) effects, this movie is for you. Someone mentioned in one of these review that they don't know where Malibu is located. I don't live far from Malibu, which is in one of the most well known counties and states in the country, so for those few who haven't heard of landslides in Malibu, oceanfront property, celebrities who live in Malibu, or one of many other references to Malibu, I'll throw you one bone - Pacific Coast Highway runs through it. If you still don't know, look it up. You're on the Internet, so Google it! In any event, enjoy "Malibu Shark Attack!"