Wow, the other comments are amazing.
My partner and I love this genre in particular and y'all took most of my answers!
Some that I did not see mentioned yet:
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Paddington / Paddington 2: so so so so good. The second might be better than the first
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Rushmore: Wes Anderson before he was a meme. A bit crass but quite fun.
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Ponyo: Myazaki movie, lovely animation, brings us to tears and is suitable for many moods
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Polyester: Devine-starred comedy that is over the top, full of love, and so funny
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Lars and the Real Girl: Ryan Gosling is a hermit and falls in love with a sex doll. The entire small town rallies together to try and reintegrate him into society.