From the "Only in Japan" department: Super Beer Walker from Takara. This is part of their "Let's Beer Great" line of beer related accessories which also include a home motorized individual beer tap (Lets Beer) and cooler (Lets Cool).
"A tool for pouring beer by injecting carbon dioxide into the beer bottle or can. Takara Co., Ltd.'s "Let's Beer" (3,480 yen) series products have sold well, exceeding 1.3 million units in the six-month term ended Sept. 30, 2001. The main sales point is that the bubbles produced by the tool will make the beer taste better." - Nikkei Business
Super Beer Walker is a remote controlled robot that carries a can of beer on it's back. Push a button and a hand lowers a hose over your beer, filling your frosty mug.
It was created by 41 year old Masahiko Kajita, a designer for Japan's #2 toy maker Takara, and is currently available only in Japan.
Super Beer Walker and Let's CoolLet's Beer Great