SPOILER WARNING: THIS REVIEW CONTAINS SPOILERS
This is the story of a comet crashing in the ocean near an Irish island. Like any comet, this one is filled with aliens. They are tentacley and like the water but are happy to chase people onto land too. What they aren't happy to do is come in contact with alcohol. So if you'll pardon the stereotype, the inhabitants all get seriously drunk in order to keep the monsters from attacking them, and proceed to try to put a stop to them. Rain ensues (otherwise the monsters couldn't get to the people!).
This is like a Simon Pegg/Nick Frost/Edgar Wright movie, but without any of those people. And it does suffer for the lack. So as that implies, it's a horror-comedy, and it's fairly light-hearted, with none of the characters really being quite as terrified as they ought to be facing giant balls of tentacles, and making jokes.
However, that's where it sort of falls down - it is light-hearted and amiable, but there really aren't very many jokes. It's like the mood is there, but I'd say there are probably only 10-20 jokes in the entire movie, many of which are minimal at best. So you're smiling a little bit the whole time, waiting to be amused, but you never quite get there. It's likeable, just not funny.
New fact I learned: Irish cops are called "garda".
In the end, we have a body count of 10, plus 20 or so whales, and a score of
3 out of 5 Gardas. It's fun, but not fun enough. It's hard to complain, like it's good all around, just not great. Nothing really...
grabs me. Eh? Eh? Now
that's comedy.
Here is what the tentacle monsters in this movie look like: