What's New Scooby-Doo: Complete Seasons 1-3: As previously stated, we here at Mr. B-Grades love us some Scooby-Doo. Which is why I was pretty excited to get all three seasons of What's New Scooby-Doo [WNSD] for my birthday. 
WNSD season 1 came out in 2002, which makes it a little over thirty years older than the original. Despite the passing time, the gang looks essentially the same. If you are a Scooby purist and you can get past a few minor changes, these three DVD's will serve you well.
One of the biggest changes is that Daphne and Velma don't sound the same  Which initially I was disappointed about, but quickly got over. I know what you're thinking. You're thinking, 'c'mon, it was thirty years ago. You really think they could get the same people?"
While I didn't actually think that, that is what you partially get, because both Fred and Shaggy are played by the same actors who did their voices for the original series.  But really I just wanted voices that sounded reasonably close. And for the two girls, especially Velma, I don't think they even tried. But again, you quickly didn't notice the change.
The plots are slightly better.  They do all make at least some logical sense, which can't necessarily be said for some of the originals. They aren't necessarily possible or really that believable, but they at least make sense. And all of the characters have at least a little more depth to them. 
Perhaps the biggest change is that Daphne isn't completely useless. She's still fashion/beauty conscious, but she can also pick any lock with the random contents of her purse and she's much more athletic.
Best of all, the show has many honest to goodness laugh out loud moments. Many of the other characters names are references to other movies/books/shows or are bad puns.  There are a few recurring gags, some of which are possible because the characters have more depth. And lots of fairly famous guest actors. Enough that you end every episode by pausing on the voice credits to see just whose voice that really was.
In truth, the thing about the show that made me the saddest is that there was only 3 seasons.
What's New Scooby-Doo? (Seasons 1-3): A-
 - Or possibly Christmas. I'm bad at remembering things like that.
 - As they did before, not the same as each other.
 - Fred Welker and Casey Kasem, respectively
 - I said 'slightly'.
 - Fred's a big Elvis fan. Daphne's a big surfer. Velma loves Hockey. Shaggy is a putt-putt champion.
 - Like, Owen DeCastle. He's the owner of a spooky castle. Or Sonny Les Martines. "Ding Dong Ding".