I love reading great SF, but sometimes we just stumble across a novel or two that just make us beam with wonder and shared nerdiness and delight... and that basically describes these two Bob novels. 
 The scale is particularly delightful. You've gotta love a snarky nerd engineer-turned-AI distributed over 30 light years who's wondering what the hell the humans are doing. I mean, he's pretty well-adjusted, copying bits of himself into new iterations and letting them rename themselves as cultural nerd-pieces from the reader's culture. 
 But what's more, he's a pretty nice guy. He's doing everything in his ability to save stupid people and aliens and terraforming new worlds... while running up against an even bigger threat. 
 This second book can be seen as more of the same as the first book, but with one huge caveat. It's a character novel or (multi-character AND single-character) series. Confused? Don't be. It's all just Bob. 
 Of course, it looks like Bob has come up against something much bigger than him. And he's also considering a bit of a branching, I think. If he can't bring his crush along the immortality slide, then there's definitely other options opening up... :) A certain alien, perhaps? Humans are so untrustworthy with immortality... :) 
 Speculation. Just speculation. :) 
 Easily a series I'll always be chomping at the bit to get a copy of. :)