My favorite movie couples are:
Noah and Allie [The Notebook];
Jack and Ennis [Brokeback Mountain] &
Patrick and Kat [10 things I hate about you]

Noah & Allie {The Notebook}
Jack & Rose {Titanic}
Jack & Ennis {Brokeback Mountain} ((Glad to see another BM fan!}}
Beauty & Beast {Beauty and The Beast}

+ many more.

Noah & Allie - The Notebook
Bella & Edward - Twilight
Jasper & Alice - Twilight
Rosalie & Emmett - Twilight
Carlisle & Esme - Twilight
Jack & Rose - Titanic

...much, much more. I have TONS of fave movie (& TV) couples. THose are just a few. (My top ones).

Noah & Allie [The Notebook]
Jack & Rose [Titanic]
Ron & Hermione [Harry Potter]
Henry & Lucy [50 First Dates]
Jamie & Landon [A Walk to Remember]
Kat & Patrick [10 Things I Hate About You]
Andrew & Margaret [The Proposal]
Edward & Bella [Twilight]
Beauty & The Beast
Jovi and Buddy [Elf]
Natalie and Colby [The House Bunny]

I have tons of couples from movies I love, but I think this does my list justice... Well what I remember. :p

Ron/Hermione - {HP}
Bleeker/Juno - {JUNO}
Jack/Rose - {TITANIC}
Jamie/Landon - {AWTR}
Forrest/Jenny - {FG}
Jude/Lucy - {ATU}

More I'm sure ;D

Anakin and Padme from Star Wars
Jack and Rose from Titanic
Mia and Nicholas from The Princess Diaries 2
Paige and Eddie from The Prince and Me
Jamie and Landon from A Walk To Remember
Noah and Allie from The Notebook
Jackie and Alex from cutting edge 2
Anne and Gilbert from Anne Green Of Gables

i do like more but just not my favorite

noah;allie {the notebook}
jake;neytiri {avatar}
mr.darcy;elizabeth {pride and prejudice}
jack;rose {titanic}
jamie;landon {a walk to remember}
ron;hermione {harry potter}
will;elizabeth {pirates of the carebbean}
kat;patrick {10 things I hate about you}

My favourites are:
jamie&landon{a walk to remember}
noah&allie{the notebook}
christian&satine{moulin rouge}
jack&rose{titanic}

evelyn&rafe{perl harbour}
jake&neytiri{avatar}
jonathat&sarah{serendipity}
will&elizabeth {pirates of the caribbean}

My favorites are:

Alice and Jasper (Twilight)

Nora and Tyler (Step Up)

Allie and Noah (The Notebook)

Allie & Noah (The Notebook)
Ron & Hermione (HP)
Jack & Rose (Titanic)
Christine & The Phantom (The Phantom of the Opera)
Jamie & Landon (A Walk to Remember)
Will & Elizabeth (POTC)

and many many more

-Ron & Hermione {Harry Potter Movies}
-Leloo & Korben {The Fifth Element}
-Julien & Sophie {Love Me If you Dare/ Jeux D´enfrants}
-Joel & Clementine {Eternal Sunshine of the Spotless Mind}
-Allie & Noah {The Notebook}
-Rose & Jack {Titanic}
-Matthew & Lisa {The Wicker Park}
-Eben & Stella {30 Days of Night}
-Marv & Goldie {Sin City}
-Cherry & Ray {Planet Terror}


and many many many more

Amanda & Graham (the holiday)
Danny & Katherine (just go with it)
Andrew & Margaret (the proposal)
Noah & Allie (the notebook)
Milo & Nicole (the bounty hunter)
Eric & Holly (life as we know it)
Peter & Gwen (the amazing spiderman)
Ron & Hermione (harry poter)
Jack & Rose (titanic)
Nora & Tyler (step up)

and many more ...