In the US it's National Poetry Month. Wikipedia explains the history quite well and Poets.org have lots of tips on how to get more poetry into your life, whether reading it yourself from the library or buying more poetry books or just generally getting out to readings etc and immersing yourself in poetry, in whatever way you feel inclined.
NaPoWriMo is part of this celebration too - where like the novel writing month of November, you can commit to writing a poem a day for the month of April. I have sworn blind I would do this every year for about four years now but always miss the first few days of it due to study.
Well, not this year: I'm having a go! Care to join me..?