Sealed With a Kiss is a traditional fully-animated film, with seals doing Shakespeare. I admit that like many others, I wasn't totally sold on the concept, but then when you get down to it The Lion King was basically Hamlet with lions, and few seemed to have a problem with that. Turned out to be quite a fun little movie.
While the dialogue is modern, the film has a few of the characters quoting famous Shakespearian lines, but in a way that shouldn't alienate children. It's more of a comedic thing. The story gets going straight away, with rivalry between the 2 groups of seals. This is part about racism, but for the most part, an old-fashioned feud. I was worried going in that the romance would be forced and sappy. Well maybe it is a little sappy, but it's sweet, and sincerely handled. As in the play, it's love at first sight. Two of the songs near the start were, I thought rather weak, but they at least progressed the story. As the film gets going, there are fewer songs.
Unlike the play, the film is light in tone and has many comedic elements. There are a few laugh-out-loud moments but some of Mercutio's puns are groan inducing(even the characters in the film seem to think so). As you would expect, liberties are taken (most notably the ending), and it isn't weighed down like some adaptations. To be honest, I fully expected it to be Romeo & Juliet in name only, and sure enough a great many story elements have no relation whatsoever to what Shakespeare wrote, but I was surprised that the core of what is here is more or less true to what I remember of the original.
I was particularly interested to see how the animation turned out, as it has emerged that this film is that rarest of things: a one man animated film. Phil Nibbelink wrote, directed and animated every frame of the film over the course of 5 years. Despite this, it is remarkably well animated. Well drawn fluid cartoony animation. It's not quite of the level of a top notch Disney animated film, but it comes very close, indeed far closer than I would have ever dreamed possible for a one-man effort. A few shortcuts are taken, but there are a surprising number of scenes animated on ones (which takes twice as many drawings as is usually necessary). This means the animation can be that extra bit more fluid. Some shortcuts can be seen in some of the background characters and effects animation, but this is generally where it matters least. The important stuff, the character animation, is top notch, what you would expect from a strong Disney animator (which is what Nibbelink spent a decade working as). The backgrounds are soft-focus simple and uncluttered to frame the character animation. In a few cases these are perhaps a little rushed, but all in all, they set the atmosphere and do the job.
Even with the lighter tone, it still manages strong dramatic moments. Despite the villain of the piece being a doofus played mostly for laughs, he nevertheless adds menace to the proceedings. There's nothing here that should bother small children, and they should have no trouble following the storyline. While the film aims at a young audience that may not yet be ready for this kind of romance, there should be enough action and comedy to keep them entertained.