Gamecube easily for me. Followed closely by the original XBOX. None of the recent systems are memorable in any way.

PS1 intro has to be my top favorite. Bold, impactful... a true classic. Best experienced in high volume.

PS2 intro brings me A LOT of good memories, and its eerie sound still gives me chills to this day. One thing that I liked about its intro is that the blocks represented the amount of games saved on your memory cards. That was pretty cool. Also, the Red Screen of Death is really frightening.

The PS3 intro I really like is the first one, the Pre-3.00 update one before 2009. I can just picture the orchestra by my side, playing this as I turn on the PS3.

I'm not an Xbox guy at all, but I have to admit the original Xbox startup was cool.

Sony.

PS1 > PS2 > PS3.

Yeah, gotta go with the GC on this one.

PS1 was the best. The first Xbox was cool as well.

The Gamecube startup was excellent, like, it's was always a pleasure to see it. I like the Dreamcast startup also. I could forget a console, but most console startup were annoying or I just can't remember. The Playstation 2 is definitely my worst of all time. Not only it's very generic and not memorable, but the blank text on black background was displaying an extremely strong rainbow effect on my DLP videoprojector, that was just pissing me off at every single startup.

Best: Sega Dreamcast
Worst: Sega Saturn

PS1 and Saturn

I agree the PS1 and GCN had great boot ups. I kinda liked the Dreamcast one for the sound too.

Japanese Sega Saturn had a great one mind. Much more exciting than the Western boot up sequence. Special mention though goes to Mega CD with Sonic throwing confetti over the SEGA logo with a "SAYGAH" chime.

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Z Button GCN launch never fails to bring a smile to my face.

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I love some of the Japanese Saturn stuff.