The Howling series is one of those horror series they could've stopped after the first one, and I don't think anybody would've mind if they knew the sequels would've been sooooooooooo bad....I have seen all seven films in the series, and let me tell ya, if you've seen the first one, you've already seen the one and only one you should see.....
Personally, I thought Howling VI : The Freaks was pretty decent though...the effects weren't the greatest, but overall I thought the storyline was cool and enjoyable. It features a young man who is a werewolf that is captured by a traveling circus sideshow and put on display by the sideshow's owner...who is actually a vampire!!! They end up fighting in the end.....pretty cool.
I hated part II...the only cool thing about seeing part II is seeing Sybil's Danning's beautiful melons in the end credits if you get the unedited version....THAT'S IT. Not even the legendary Christopher Lee could save this piece of $h!t of a movie.
Part III is god-awful......one of the worst werewolf movies ever made....for the love of God, pass on this one.
Part IV is boring as hell up till the end...the last five minutes is the only part worth watching...it's also the only time you get to see the actual werewolf....just try to keep awake till the end.
Part V isn't too bad either...story wise it's actually pretty suspensful. But don't expect any special effects or any gore. In fact, you never really get to see an actual werewolf in it, but it does keep you guessing which member of the group is the werewolf and who's doing all the killing....all in all, not bad. Not great, but not bad.
Part VII : New Moon Rising - AVOID THIS PIECE OF DOG-$H!T OF A MOVIE LIKE THE F***IN' PLAGUE!!! Quite possibly, the worst horror movie EVER MADE!!!!! AVOID, AVOID, AVOID!!!!!!!
So, to summerize, definately see part 1, and parts 5 and 6 are pretty decent. Avoid parts 2, 3, 4, and 7 because they totally suck @$$.