The whole game is less fun when you use wildcards, but as long as there's some sort of logical link it's within the rules. In my set below, you could technically link Pierre Curie and Licinus by saying they're both dead people, but it's more fun if you find more complicated links.

Book
Bookworm
Cockroaches

Fallout
Radiation
Poison
Nurse
Scrubs

Pierre Curie to Licinius

For two things entirely native to africa, yes, I'd say it counts.

Hmm... we got a guy who did science on electricity... and a roman emperor... wow, that's tricky.


Pierre Curie
Crystollography
Stone
(Marble) Statues
Rome
Licinius


Battery to is.

Battery
Electricity
H2 (Guiding enough electricity to water makes it fall apart into H2 and O2)
Rockets
ISS
Is

Happy to Now

Happy
Comedy
Mel Brooks
Spaceballs
Now

And so we're clear, then will be now...soon.

Tunguska Event to Australopithecus

Tunguska Event
Meteor
Dinosaur
Prehistory
Australopithecus

Ashes to Snow

Ashes
Fire
Nuclear (fire)
(nuclear) Winter
Snow


Alternately:

Fire
Fire Bender
Lightning
FF13
Snow


Coat Rack to Sodomy.

Coat Rack
Closet
Sodomy

Or
Coat Rack
Rack
Breasts
Penis
Sodomy.

Italics to the moon.

Loved Kerim's Coat Rack -- Closet -- Sodomy Solution. Very Elegant


Italics
Script
Story
Werewolves
Moon

Planular Intersection to Robinsons Barley Water

Planular Intersection
Intersection
Gas Station
Soft Drink
Robinson's Barley Water

Kitteh to Reticulating Splines

Kitteh
Annoying crap from wanna-be geeks
The Sims (and if you can't see the connection- then I envy you)
Reticulating Splines


Tungsten to pizza.