Lambda the Ultimate

I do not mean to start a completely subjective navel-gazing thread. I mean to learn, "if I loved Scheme when I learned it (and I really did, back in college in 1989), what else could I look into in these modern times?" (apropos the other current Scheme thread.)

If you have thoughts, please mention something like: The language name, the language web site, the bullet point reasons you think it is at all related to where Scheme comes from spiritually, the bullet point reasons you think it is "better" than Scheme, the bullet point cons (if any ha ha!) in the language.

(Or tell me this is a very bad idea for a thread, and delete it...)

Wishing to simultaneously learn and yet avoid any rat-holing flame-wars. :-)