The American Heritage® Dictionary of the English Language, 4th Edition
adj. Preserved and sealed in a can or jar.
adj. Informal Recorded or taped for repeated use on television or radio: canned laughter.
adj. Informal Used repeatedly with little or no change: a canned speech.
adj. Informal Totally unoriginal; devoid of individuality: "Most [soundtrack albums] contain homogenized dance tracks that provide little more than canned excitement” ( Boston Globe).