The Arrival (1996)
Watched this lowish budget Sci-Fi thriller this afternoon - not seen it in years - and enjoyed it greatly. Charlie Sheen is the hero and this is an intelligent alien invasion film with great effects when required and quite good aliens. I suspect most of the budget went on the underground base and alien weapon scenes - a rotating sphere capable of sucking items, buildings etc into a singularity.
Most of the 'terribly good' (1) films the sci-fi channel shows and produces could learn a great deal from this film re how to do a lot, well, with not much money.
http://en.wikipedia.org/wiki/The_Arrival_(film)
Regards Neil
(1) Awful piles of festering dung, with awful effects, crap stories, crap acting - just terrible.