Andre Schurrle's first-half strike and a last-gasp effort from Demba Ba ensured Jose Mourinho's side will progress on away goals thanks to the 3-3 aggregate score.
Former Blues striker Hernan Crespo was left breathless at full-time after tweeting throughout the encounter as part of Heineken's 'Share The Sofa' evening.
Goal compiled a list of our favourite tweets from the Argentine during and after the game, as he talked Frank Lampard, PSG's future, and the only goalkeeper to get the better of him...
Crespo on Chelsea
"What a stadium! When they cheer like this, you hear the noise in your legs."
"Chelsea had everything prepared, but maybe changing Hazard helped mix things up... football's funny like that."
"Goal! I said we'd have 1 in each half. Thanks Chelsea for proving me right... you took your time though."
"In the end it was all about the last 15 minutes. Mourinho built everything together to make this happen. Credit to him."
Crespo on PSG
"Cavani and Lavezzi having deja vu. With Napoli they were 3-1 against Chelsea in the first leg. And then lost 4-1."
"Great save from PSG keeper - that shot took a nasty deflection."
"Feel sorry for PSG - but experiences like this mean you only come back stronger. And they'll be even stronger next year."
CRESPO ANSWERS GOAL'S QUESTIONS
Frank Lampard makes his 50th Champions League knockout appearance for Chelsea tonight. Can he inspire the Blues?
Mourinho has been critical of his strikers this season - can Eto'o do enough to turn the tie around tonight?
Crespo: "Mourinho likes a certain kind of forward. Confuses me why's he still got Lukaku out on loan."
Crespo: "I was lucky to play WITH the best keepers. And scored goals against most of the others... Except Seaman."