For good dance numbers, look for ones starring any or all of SRK, Salmaan Khan, Hrithic Roshan, Tiger Shroff, Aishwarya Rai, Katrina Kaif, Deepika Padokone.
Devdas is a must, but you will cry.
Jodhaar Akbar for a marvellous historical epic.
Om Shanti Om, of course.
Goliyon Ki Raasleela Ram-leela is the best version ever of Romeo and Juliet. The 'holy palmers' speech is done entirely in mime, and is hilarious.
Crime caper very much along Ocean's 11 lines - Happy New Year, or the less caper-y Jawaan.
Spies and action, you're spoiled for choice - Ek Tha Tiger, War (with a Tiger/Hrithic dance off!), Bang Bang, the Doom series (Doom 2 is the best) ...
Really dance focused, even by Bollywood standards - ABCD, and ABCD2.
OMG is a nice multireligion spin on The Man Who Sued God.
Padman and Toilet are both social issue films, but lightly done.