I absolutely agree with all of you here. To sum up: I really loved this episode. Back to the old days with Howard and Raj's bromance in the focus of attention again. The door-listening seen when Raj put his face a quarter of an inch away from Howard's face was priceless. Penny finally said ILY, and the way it came out was perfectly done, because it was so "in-character". However, the Alex-text Leonard received was quite a mood-killer. I thought the text was from Penny and was quite sad when I found out that it actually was from Alex.
However, this is obviously looking better and better for L/P lovers out there (me included), and the fact that the show is on a Record-high numbers of viewers is soooo deserved. People who claims this show has declined since season 3 is just totally wrong. The additions of new faces were needed, and they have done it perfectly.
Kudos! TBBT can go on for maaany more seasons. I promise you all that we will reach season 10.