(A movie I have seen THREE times)
Most of the time people say that the book is much, much better than the movie, but for me, they both are great. The premise, of course is the same, but the approach and the treatment are different.
As for the movie, it too has parts that are better than the book (Thanks to David O Russel and his team). The visual effects that probably words could not describe, the scenes that were amplified, the scenes that were toned down or sanitized and the movie version of the dancing scenes were executed well.
Together(the book and the movie), they make a great team, just like Tiffany and Pat. The ending for book was perfect for readers and the ending for the movie was perfect for those who were not "blessed" to read the book.
Bradley Cooper did a fine job as the movie version's Pat.
Robert Di Niro, Chris Tucker and the rest of troop did well.
So, even if I'm late, congratulations to the cast and crew for a job well done!