Top 10 Biggest Flop Films of Bollywood for the Year 2010 are: -

Salman Khan, Zarine Khan
Lost few crores

Uday Chopra, Priyanka Chopra
Gross revenue just 6 crores

Emraan Hashmi, Neha Sharma
With budget of 17 crores managed only few crores in return

Mallika Sherawat, Irrfan Khan
No show at box office

John Abraham, Pakhi Tyrewala
Recovered only 8.5 crores; budget 30+ crores

Akshay Kumar, Aishwarya Rai
Budget 40 crores; Revenue 22 crores

Abhishek Bachchan, Deepika Padukone
Disaster at box office

Hrithik Roshan, Barbara Mori
Lost few crores despite getting one of the best openings ever

Hrithik Roshan, Aishwarya Rai
Budget 75 crore; Revenue 30 crore

Abhishek Bachchan, Aishwarya Rai
Entailed heavy losses. Bought for 100 crore but made 30 crore only.
Other noteable flop films were:-
Rann, Teen Patti, Phoonk 2, Lamhaa, Aisha, Aakrosh, No Problem Share: