Sympathy
by Jeff
Image text: Excellent recovery: ... which we could try to use to somehow save your original brother!
This comic is a play on the word "moment" from the first frame.
Obviously, the second frame is the correct was to respond to a grieving person. The third frame would be the physicist questioning the use of the word "moment".
In the fourth frame, causality in physics means that every cause has an effect.
Static
by Mike
Image Text: I firmly believe that nothing can go wrong on a project if you're wearing one of those wrist things.
This comic is making of the fact that the male geek here thinks the anti-static bracelet will work as a contraceptive technique. Anti-static bracelets are used by computer technicians to prevent an accidental static discharge that can damage sensitive electronic equipment.
UPDATE: From the comments it looks like there's some confusion over who is talking in each panel. In my opinion, the girl is always the speech bubble the originates on top (the ones that have the arrows pointing down) and the guy is the one with the arrows pointing up. They are currently trying to have sex and the guy is wearing an anti-static bracelet (where on his body he's wearing it is unclear). Earlier in the week he was replacing RAM and wearing a condom (again, where on his body is unclear).
Scary
by Mike
Image Text: I'm teaching every 8-year-old relative to say this, and every 14-year-old to do the same thing with Toy Story. Also, Pokemon hit the US over a decade ago and kids born after Aladdin came out will turn 18 next year.
No hidden meaning here, but this sure is scary. I remember graduating college and seeing a banner welcoming the class of 2010. I was half expecting them to be robots. What's being implied here is that time is moving really quickly and we're getting older faster than we think. Events that seem like they "just happened" have happened long enough ago for a whole other person to come into existence, grow up, and learn to carry on a conversation.
Ohm
by Mike
Image text: More generally, with great power comes great dEnergy/dt.
Good old uncle Ohm. In this, not-quite-sure-it-happened-this-way, comic, Ohm's nephew (I'm presuming they both have the last name Ohm) is being given what would later become part of Ohm's law of electricity.
I = V/R
It relates the current I, to the voltage (electrical potential) V and resistance R.
Power is just current multiplied by voltage P = IV. Through substitution with Ohm's law we can see that power is also equal current I squared times resistance R.
The reason old uncle Ohm is stating it this way is probably because he's making a pun on how Peter Parker's (Spiderman's) uncle would relate his own dying words to his nephew many decades later. "With great power comes great responsibility"
Lease
by Jeff
Image meta tag: You should talk to the girl down the hall; I think you'd like her. Lemme know if you find out why she's ordering all those colored plastic balls.
This cartoon is one of many that addresses the troubles with growing up while staying close to youth.
The meta tag references this xkcd comic in which the character stumbles upon a girl who's apartment is filled with colored play balls like in a ball pit.
Avoidance
by Jeff
Image meta text: Hobby: seeing how many menu selections you can get someone to go through before they realize you're not an automated system and/or hang up.
Someone has to record all the annoying phrasing on all the hold menus and "This call cannot be completed as dialed...". Right?
In this comic, the reason the character cannot reach the woman who gave him the number is that she recognizes his number and utilizes her "voice work for Verizon" to convince him he has the wrong number. She picked up the first time because she did not recognize the number. Sadly, now he will never reach her.