The film, based on William Shakespeare's classic play, Romeo and Juliet, came out in early 2011 here in the UK and was met with a quite good box office reception and a not bad critical reception.
Personally, I'd give the film about a 6.5/10, it was very funny and had a fairly sound story (as it was based on a play written by the genius that is Shakespeare), the film also had very solid voice acting (James McAvoy, Emily Blunt et al) and had really good music (from Elton John and Lady GaGa). However, it's not particularly great, the characters are so-so - nothing original - and easily forgettable, the animation is also a bit clunky and certainly is nowhere near the best I've seen this year ( *cough* Rango *cough*). However, there are enough laughs, jaunty tunes and Shakespeare/nerd references (i.e. the house numbers: 2b and not 2b and some glue labelled 'Taming of the Glue') to make this a wholly enjoyable - if not entirely memorable - film.
I'd probably recommend renting it as opposed to buying it, but the decision rests with you. It's still a good film.