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I discuss some observational properties of aspherical nebulae around massivestars, and conclusions inferred for how they may have formed. Whether or notthese ideas are applicable to the shaping of planetary nebulae is uncertain,but the observed similarities between some PNe and bipolar nebulae aroundmassive stars is compelling. In the well-observed case of Eta Carinae, severallines of observational evidence point to a scenario where the shape of itsbipolar nebula resulted from an intrinsically bipolar explosive ejection eventrather than an interacting winds scenario occurring after ejection from tehstar. A similar conclusion has been inferred for some planetary nebulae. I alsobriefly mention bipolar nebulae around some other massive stars, such as theprogenitor of SN 1987A and related blue supergiants.

Eta Carinae and Nebulae Around Massive Stars: Similarities to Planetary Nebulae?