Well, I've been a big fan of comic books since I was a little kid. In fact, I used to write and draw my own comic books when I was on the old Lost in Space series.

I had my guitar at the set of 'Lost in Space' every day. I was the only one in the cast who had a stereo in his dressing room. So while I was in school or when I was in there working with Dr. Smith and the robot, half the rest of the cast was in my trailer listening to their records that they would bring.

And of course, I absolutely loved making Lost in Space as a kid.

I started playing the guitar when we started filming the pilot to 'Lost in Space,' which was way back in December of 1964, and there's a little bit in the pilot that was used in the first season where Will Robinson is sitting around some bad foam rubber rock playing and singing 'Greensleeves.'

That's one of the reasons I retired. To stick around, the way I was fighting, I would have to start playing it safe. I went out on my shield. That's the way I liked it. I fought that way my whole career. I don't want to bore people my last three or four fights.

All business success rests on something labeled a sale, which at least momentarily weds company and customer.

Lionel Richie, love song, OK, thank you very much, good-bye. And all of a sudden I realized that, in my career, what has made my career has always been the surprises.

If you work at a 10,000-person company, and you're using e-mail as the primary means of communication, then you probably have access to a couple hundredths of 1 percent of all the communications happening across the company. But if you use Slack, you might have access to 10 or 20 percent.