[tipsygypsy]

okay. when you recommend something to someone, ぜひ means you should/you better example: ぜひあの映画を見てください。　You better watch that movie.

in another case, ぜひ can be the word to show that you're agree with someone's offer. example: dude A: "hey why don't we go drink this weekend?" you: " ぜひ "　( most definately )