If you liked the One Piece Movie 1 anime, the Anime-Planet community thinks you'd like:
Fifty years ago, the Demon Stone and RAVE (two powerful artifacts) are broken and scattered throughout the world. The story follows the journey of Haru Glory; during his travels he meets many new friends and allies, and also enemies known as the Daemon Card. He will have to use the powers given to him by RAVE to defeat the Daemon Card and find the other pieces of RAVE.
Drawn to the mystique of the unknown, Hunters travel the world in search of terrifying creatures, incredible riches, and unexplored lands. Gon Freecss is a naive-yet-determined young boy who aspires to join the ranks of these individuals, in order to find his missing father Ging - a master of the profession himself. To reach his goal, he partakes in the formidable Hunter Exam, a series of tests that push the participants to their physical and mental limits, with a Hunter License as the prize. During the exam Gon befriends vengeful Kurapika, doctor-to-be Leorio, and skilled assassin Killua, who have entered for their own reasons. But with the sinister Hisoka standing in their way, will Gon and his friends be able to succeed in obtaining their reward, or even escaping with their lives?
HxH, like One Piece Movie 1, is another anime which successfully combines humor, adventure and powered-up fights. Staying on the more playful side, they differentiate themselves from other shounen anime.
Kagome is a normal high school girl who falls into a well, transporting her back in time to the feudal era. Upon her arrival to this world, she mercifully unleashes Inuyasha, a half demon. As if this isn't enough, she also discovers that she is the bearer of the Shikon no Tama, a jewel of great spiritual power, a jewel which has just shattered into a million shards. Now, along with Miroku the priest, Sango the demon hunter, and Shippou the mischievious fox-demon, they must set out to find the Shikon shards and defeat the evils of the demon Naraku.
InuYasha has that monster-of-the-week feeling to it - something that is definitely present in the OP Movie as well. A short story with a climax at the end, a powerful battle and some humor to break up the flow; they can all be found again in InuYasha.
Some years into the future, a strange, unexplainable natural disaster has broken off a piece of the Japanese mainland. Known as the Lost Ground, it is now inhabited by people with Alters -- machine-like extensions of their own will. In order to keep the peace on the Lost Ground, the HOLY organization uses its own Alter capabilists to police the region. In the midst of the chaos is a young man named Kazuma, whose life will soon change forever as he discovers his hidden abilities, and how to wield them.
Scryed and OP Movie 1 have a few of things in common other than the kickass fights and similar powers. There is less comedy and more story in Scryed, but the atmosphere makes up for it and makes Scryed a good recommendation for OP Movie 1.