The note that Asha passes to Todd is a page torn from The Kama Sutra. The caption reads "Any posture is unsatisfactory if kissing is impossible."
Amongst the knickknacks on Dave's bookshelf at Western Novelty is a figure of J.P. Patches (1958), a popular children's entertainer in the Seattle area during the 60's and 70's.
When Todd first arrives at the airport in India, and is making his way through the group holding signs looking for people, the name on one of the signs says "Mr Gwen Bialic". This is an in-joke because Gwen Bialic is a co-producer of this film and is a woman, not a man.
When Todd first arrives at the airport in India, and is making his way through the group holding signs looking for people, the name on one of the signs says "Mr. Toad". Throughout the movie Todd's name is mispronounced at Toad. If he had been aware of this, Todd wouldn't have needed to hire a taxi.