This is from the K-F fansub irc channel:

[01:12] -dythim- One Piece is currently : 182 Anime Episodes with 4 Intros and 12 Endings, 4 Movies with 2 Movie Shorts, 3 TV Specials, 1 OVA, 313 Manga Chapters collected in 32 Volumes and 2 Supplementary Data Books, and 2 Manga Artbooks!
[01:12] -dythim- Movie 1 aired between Episodes 16 and 17, Special 1 between Episodes 52 and 53, Movie 2 between Episodes 60 and 61, Movie 3 aired between Episodes 102 and 103, Special 2 aired between Episodes 149 and 150, Movie 4 aired between Episodes 146 and 147, Special 3 aired between Episodes 174 and 175. Movie 5 aired between Episodes 183 and 184.