Is the plot solid?  Absolutely Not.
Is this movie full of good dialogue?  Absolutely Not.
Is the acting great?  Absolutely Not
Are the special effects real good?  You could probably do them at home for about $1.95.
Is this movie entertaining?  HELL YES!!
Despite the shortcomings of this film, of which there are quite a few, I have to admit that I really like it.  I don't like it in the sense that I appreciate it's finer points.  I also don't have great respect for any one aspect of the film.  But, the bottom line is that the movie is fun to watch, therefore you could do a hell of a lot worse.
When I first heard about the plot of this movie some time ago, I decided that there was no chance that I would ever watch it.  A man's hand turning into a snake and attacking people?  You get the point.  It sounded too stupid to be interesting.  However, I noticed recently that some of the online reviews were actually favorable.  After reading them, I thought that I would give it a chance.  I saw this one in a local rental store and rented it.
The plot is as simple as it is ridiculous.  A man is bitten by a snake that is radioactive in the "Yellow Sands" area and his hand turns into a snake's head.  Huh?