Ohhh... tough question. I think I've got the most basic taste in movies one could possibly ask for, more-than-possibly even childish, but if it's all about movies I really enjoy watching, these ones got to make it to the top 10. They're in no particular order, mind:
Hot Fuzz - brilliantly clever movie. Gets better on every viewing, as the amount of foreshadowing and background details in this is absolutely staggering. My favourite of them is probably the quarter-second glimpse you get at a poster for the Romeo and Juliet play when Angel rides back into town, with the two new lead actors already advertised. You really have to look for it, and even then you may hardly notice it, but it's there and it's a brilliant testament to the level of attention put into making this film.
Life of Brian - Another British comedy, slightly older, still massively fun. I realize I may be misunderstanding their whole concept, but I find Monty Python to be at their most funny when they're not being surrealist, and actually telling a long story instead of many short sketches.
Flåklypa Grand Prix - as a Norwegian, I am legally obligated to love this movie to bits. Easily the best movie ever made in this country. Also available internationally under the title The Pinchcliffe Grand Prix, for those who are interested. I believe it is currently the highest-rated stop-motion animated movie on IMDB, sitting at a respectable 8.4/10, albeit with too few overall votes to make it to the Top 250 list.
Spirited Away - favourite animated movie? Probably. Truly a masterpiece. So atmospheric! Such feels! I recently saw My Neighbour Totoro, and it definitely had the same atmospheric qualities and feels to it, but Spirited Away has a gripping story too.
The Martian - no antagonist, no conflict, just a man in a sticky situation and a crap-ton of engineering to get him out of there. I would probably rank this as my favourite book too, and it was very nicely adapted. I love how the aesthetics of the film are current instead of imagined-futuristic, making the whole scenario so believable it almost hurts to know that we haven't just got our stuff together and gone to Mars already. The moral of the story is that the density of Mars' atmosphere must be severely underestimated, as the majority of the mishaps happen due to stuff blowing away. Putting a shout-out to Gravity in this entry too, as I really like that movie too, but maybe not enough to have it on the top list.
Mad Max: Fury Road - yes, I know. It's a big roadrunner cartoon, a long chase scene, and it probably misses all the marks of what a film ought to do. It doesn't make much sense when you think about it. But it's a thing of beauty and immensely enjoyable. Nothing short of spectacular.
Back to the Future - how can I not include this. Great premise, great execution, great acting, great setting, great all along. A truly enjoyable trilogy I make sure to watch at least once every year. I think I like the first one the best, but the other two managed to follow it up excellently. It's a trilogy with a lot of heart in it.
Home Alone - Half Ferris Bueller, half Saw. Really enjoyable, ultra violent family movie. The sequels aren't that much to cheer for, but the original has a great atmosphere, sets up everything nicely, and when the "home defense" part actually starts, it's so satisfying.
Ratatouille - the Pixar representative. Really, there are many great Pixar movies that deserve a spot on the list, but Ratatouille is the answer I give if I ask myself "If I could watch one Pixar movie today, which would I choose?". Major shout-outs to Toy Story (all of them), Coco, The Incredibles, Monsters, Inc., Wall-E, Finding Nemo (and Dory), Inside Out and even Cars (but only the first one), but if I have to pick one, it's the one about the cooking rat in Paris. Again, it's probably the setting and atmosphere that does it for me.
Zootopia/Zootropolis - as I just said, setting and atmosphere are important to me, and I believe Zoo(...) is second to none here. That city might be the best crafted setting for an animated movie ever, and it's a shame we only get to see glimpses of part of it. The story is good fun too, but it's not why it makes my list. That would be the bustling train terminal full of commuters, the shivering cold Tundra Town, the sun-baked desert next to it (and the genius way the latter is heated by the cooling system of the former), the dark rainforest, and all the other great places that make the city bustling and believable.
Jonathan Dame's direction