Pyar Hi Pyar (1969)

This is a pretty silly movie.

Pyar Hi Pyar starts out with a baby abandoned by his mother. When his wealthy father (Raj Mehra) comes to find him, the shelter matron inadvertently gives him the wrong baby. This baby grows up to be Vijay (Dharmendra), who meets the lovely Kavita (Vaijanthimala) as she searches for her missing father. Between this relationship and the love story of Vijay's driver (Mehmood) with his girlfriend (Helen), the plot stays light and fun.

It probably has my favorite exchange of extravagant compliments:

As well as some unintentional comedy:

I think she means Samson and Delilah.

This is Vijay (Dharmendra)'s desk at the police office. I love the lamp.

It has some really great songs,

A gorgeous leading couple,

And a great supporting cast:

In spite of all the fun and craziness, the plot never quite disappears; and in spite of a great deal of irrational behavior, most of the characters remain quite likable. We even get to meet Mehmood Jr!

What's not to like?