there are, many, many words (regionally, in NYC/metro area, and esle where) that get r's dropped (like max's example of draw you a pitcha. -(max is far, far from NYC!)

there are just as many words that get R's added.
can i think of an example? no of course not..
well maybe.. there is a road in the bronx, Mosholu Parkway, that is Marsha loo (and alternately, ma Shula Parkway, but never Mosholu!)

there are lots of others, but unless i make an effort, i don't hear the R--it just sounds normal to me!

R's get added to english word here in NYC and elsewhere.

my other obsession