And while these three rom-com movies certainly share aspects of those genre tropes, they all take that formulaic format to unexpectedly great places. All of these underrated gems are well worth a watch and, handily, they're all streaming now on Prime Video. Here's why you should add these three heartfelt and hilarious Prime Video romantic comedies to your watch list. Watch "Imagine Me & You" on Prime Video nowSign up to get the BEST of Tom's Guide direct to your inbox. Watch "Brittany Runs A Marathon" on Prime Video now