AccursedTheory said:
please note the early Tyranids
http://album.warpshadow.com/v/ShadowsInTheWarp/Tyranid-Archive/Warhammer-40K/1st_ed_nids/
they look very different from the zerg, now note the second edition
http://album.warpshadow.com/v/ShadowsInTheWarp/Tyranid-Archive/Warhammer-40K/2ndEdNids/
closer but still only passing similarities, now lets see the 3rd edition
http://album.warpshadow.com/v/ShadowsInTheWarp/Tyranid-Archive/Warhammer-40K/3rdEdNids/
much closer but still not bad. When was this codex released? 2001? Yeah... what about the fourth edition released in 2005?
http://havocbugsofwar.blogspot.com/2010/06/codex-overview-tyranids-hive-tyrant.html
Yeah... your argument is starting to fall apart a bit...
For the OP: anything by Asylum films