ZDoom

Like the kill command, resurrect by itself resurrects you, resurrect (monster name) resurrects the monsters. Lets say a friendly marine is killed. If you use the resurrect command on the marine, the marine still retains the +FRIENDLY flag.

The marine doesn't have a +FRIENDLY flag...
Anyway, this would be neat, but totally unlikely to be added in.

The first half of what you're asking (self-resurrection) already exists.

The ZDoom Wiki article on console cheats wrote:resurrect
When dead, resurrects the player (brings him back alive and to 100% health). Note - cannot be used when the player is "broken apart" e.g. shattered to pieces after being frozen.

I think he knows that already, he means he wants an addon to the command.

so, probably we need to add an argument to the 'resurrect', or define a new cmd, like 'resurrectactor'.

Yeah, sorta like:
kill- kills player, but
kill actorname kills all of that actor.
He pretty much wants resurrect to act the same way.