When It's All Over We Still Have To Clear Up is my favourite - nice and subtle and is great romantic sad-sack before they went overboard with it.
Final Straw was their best moment as a "big" band - it's a lot more punchy and reach the skies style if that's your kind of style.
Songs For Polarbears is also worth a listen since it's so different from the rest of their stuff - a lot of it is really pisstakey and just plain weird.
I'm not really a fan of their other albums. Snow Patrol get a lot of
**** and I can see why but those three albums ^ tend to be under appreciated.