12. Mean Girls (2004)
There was a time when Lindsay Lohan was best known for her acting rather than her party-hopping. Showcasing La Lohan in arguably her best role to date, this Tina Fey-scripted film also boasts a breakout turn by Rachel McAdams as evil queen bee Regina George (''Gretchen, stop trying to make 'fetch' happen! It's not going to happen!''). While Mean Girls is technically a comedy, its depiction of girl-on-girl cattiness stings incredibly true. Tim Stack