Wallace and Gromit aren't just a pair of cartoon characters, they're a British Institution, and as such I expect a lot from them. Undoubtedly, the unparalleled magnificence of their previous adventures couldn't have been expected to go on forever... but somehow I thought it would.
It's not the animation, which is as delightful as ever. It's not the puns, or cultural references, which are brilliantly incorporated (especially the Aliens scene). It's not that Wallace is any less gormless, or Gromit any more astute, or that the baddy is under par...
I can't put my finger on why it's not quite as good as their previous adventures, and surely I can't be the only viewer who's just slightly disappointed? I didn't laugh out loud in many places, which is unusual... and the story seemed just a tad cramped into its 29 minutes...and perhaps that's all it takes: two negligible complaints against an outstanding, beloved work of animation.
So 4 stars then... I didn't LOVE it, as I have LOVED them before... but it's still good Wensleydale-cheesy fun for the young at heart of any age.