Pretty good movie overall. First half was nothing special but it got better as it went along.

A film with more than the usual spoiler issues. Talking about it in any detail feels akin to handing you a gift-wrapped present and saying, "I hope you like it -- It's a thriller about a diabolical secret experiment."

The film creates a perfect balance between action and depth of basic needs, in the midst of an infertile atmosphere.

If you like to be scared, if you like to laugh, and if you like to learn a thing or two at the movies, this absolutely cannot be missed.

The movie was based on a book which was far better then this movie. Direction in this film is the fail. When people get attacked by the bugs they just scream and stand there, instead of grabbing bugs off theur body. It just looks phony. I had read the book before seeing the film and it was a classic scary scifi. The movie was too cheap to have careful direction. Same Directer ruined other books to film. Never uderstood why he was picked for some potentially good films.Can't blame actors when director is terrible.

This movie seems to go on forever. The script starts off promisingly enough, but the writer never seems to know when to stop. He has included enough material for two or three films – not two or three interesting films, mind you, but two rather dull (if shocking and even gruesome on occasions) and basically small-budget shockers. The players, led by Mr. Dillman (I call him, "Mr. Dullman") are an uninteresting lot, and as for the bugs themselves –yuk! True, director Jeannot Szwarc (don't ask me how to pronounce that one!) has worked a whole lot in TV and obviously knows how to shoot fast and with economy, but the film outstays its welcome by a long chalk. I'll admit the bugs themselves are mildly convincing, but even for ardent horror lovers, this sluggish, talky, unconvincing and even rather dull at times scenario out-stays its welcome by a long chalk.

I saw this movie one late night, and I found it very interesting. "Bug" sort of reminded me back in 1954 where man created the "killer bees", but it's not a movie about bees, it's about killer roaches from the Earth. In a small California town, it gets rocked by an earthquake. Out of the crack, there are these mutant roaches that are strangely huge for their size. They don't eat anything, they are very tough. Worst of all, these critters can start fires. They burned some houses down, they killed a father and son in their truck. They caused a young woman to go deaf in her ear. These things are a menace! The latest pesticide wouldn't do anything to quell the problem. Despite that, a local college professor(Bradford Dillman) takes a high interest into these malevolent creatures. He would study them closely and carefully. But when his wife was killed by the firebug, his obsession get very extreme. He would study one, mate it with a regular size cockroach, because they don't copulate with each other. After that, the new breed of roaches become carnivorous. Since the earlier ones ate only ashes, the new breed are even worse. This obsession drove him over the edge, and paid a very high price. Don't forget the bug spray with this movie, pest control will never be the same! 2.5 out of 5 stars

Despite the lurid exploitation title, this is for the most part a grim and weird semi-art-house sci fi movie, more akin to PHASE IV than something like THEM or even THE BIRDS.BUG benefits greatly from the intense and nervously twitchy central performance of BRADFORD DILLMAN as the scientist who goes off the deep end after his wife is set ablaze by the title critters. The insect photography is well-done and the soundtrack whenever the bugs make an appearance is a prototypically 70's art-house exploitation hybrid--a series of scratches and electronic pops--but it becomes unnervingly effective. The scenes near the end where Bradford Dillman starts performing bizarre experiments upon the BUGs and establishing some sort of contact with them remain potent and eerie and all of the scenes where he finds them crawling loose in his farmhouse are disturbing; If you are willing to forgive some poor special effects near the climax you wont be disappointed by Bug. It is a genuinely creepy movie, one which manages to conjure up a disturbing atmosphere of heat and paranoia and eventually crumbling insanity. Worth a look.