Mushishi: episodic stories of the supernatural travels of a medicine man or "Mushishi" and how he helps people afflicted with supernatural "germs" called "Mushi" Very relaxing and artistic. Not action or power levels crap and is set in a semi-historically accurate representation of japan ,no colored spiky haired blue eyed boys except for three exceptions an their case is central to the story.
Samurai Champloo: A story set in feudal japan around the edo period. Beautifully directed sword fight scenes and awesome music and high overall quality. A must watch.
FLCL: High quality work by the studios that brought you EVA and Ghost in the shell. Wacky plot and awesome fight scenes make this also a must watch.
Tengen toppa gurren lagann: Hot blooded action, imaginative worlds and an inspiring cast makes this a memorable series.
Pic related samurai champloo.